Weekly Weather: Rain expected across a wide area early in the week due to a low-pressure system and fronts; keep an eye on the movement of Typhoon No. 30.

2026/10/18 07:25

Moving forward, the area around Honshu will become increasingly susceptible to the influence of low-pressure systems and weather fronts.
In the Nansei Islands (Southwestern Islands), please keep a close watch on the future path of Typhoon No. 30.



Tomorrow, Monday the 19th, a low-pressure system along a front is expected to intensify as it moves from the Sea of ??Japan toward the Sea of ??Okhotsk. Under the influence of this low-pressure system and the front, rain is likely to become widespread, particularly along the Sea of ??Japan side of the country, stretching from Northern Japan to Western Japan. In some areas, the rain may intensify locally and be accompanied by thunderstorms.
In Hokkaido, the passage of the low-pressure system will cause the isobars to tighten, which may lead to stronger winds. Please be cautious of high winds and high waves.

A weather front is expected to remain nearly stationary near Honshu through around the 20th?21st. From Western to Eastern Japan, conditions will likely be mostly cloudy or rainy through around the 21st, while in Northern Japan, this pattern may persist until around the 22nd. From the 22nd onward, the front is expected to stall to the south of Honshu; however, warm, moist air?originating from Typhoon No. 30 is projected to flow toward this front, potentially leading to heavy rainfall, especially along the Pacific side of Western Japan. Please stay updated on any changes to the forecast.



As of 6:00 a.m. today, Sunday the 18th, the "very strong" Typhoon No. 30 is moving in a west-northwesterly direction near Guam in the Mariana Islands. Typhoon No. 30 is moving through waters with sufficiently high sea-surface temperatures, meaning it will retain much of its strength as it travels west-northwest. It is expected to approach the Sakishima Islands around the 23rd. On Friday the 23rd, the maximum sustained wind speed near the center of the typhoon is forecast to reach 50 m/s, with peak gusts of up to 70 m/s?winds intense enough to potentially cause the collapse of some buildings.

Okinawa and the Sakishima Islands may experience severe weather around the 23rd as the typhoon approaches. Please stay tuned for the latest typhoon updates and take all possible precautions to prepare.




Looking ahead, warm air is likely to flow into the region?particularly during the first half of the week?leading to temperatures that are generally higher than average. While daytime highs may reach around 30 C in some areas, clear days?especially in inland regions?are likely to bring significant temperature fluctuations between day and night. In Northern Japan, morning lows could even drop below 0 C in some places. Please take care to manage your health amidst these temperature changes.

Strong Typhoon 30 (Champa) to reach the waters south of Okinawa with very high intensity in the latter half of next week.

2026/10/17 13:10

As of 12:00 PM today, Saturday the 17th, Typhoon No. 30 (Champa) is located in the Mariana Islands and is moving west-northwest at a speed of approximately 30 km/h.

? Typhoon No. 30 ? Saturday, the 17th, 12:00 PM
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Center Location: Mariana Islands
Intensity: Strong
Movement: West-northwest, 30 km/h
Central Pressure: 970 hPa
Maximum Sustained Wind Speed: 40 m/s (near the center)
Maximum Gust Speed: 55 m/s
==================



As the typhoon moves over areas with high sea-surface temperatures, it is expected to intensify while continuing its path toward the northwest. By next Thursday, the 22nd, it is projected to reach the area south of Okinawa with "very strong" intensity.
In the latter half of next week, Okinawa may experience impacts such as strong winds and high waves. Please stay updated on the latest information regarding the typhoon and take necessary precautions well in advance.

Clear skies this weekend—perfect for heading out; keep an eye on changing weather next week.

2026/10/17 12:31

Today, Saturday the 17th, the area around Honshu is under the influence of a high-pressure system extending from the continent, resulting in clear skies across a wide region.
Meanwhile, a steep pressure gradient?created between a low-pressure system over the Sea of ??Okhotsk and the continental high-pressure system?is driving moderately strong northwesterly winds and an influx of cold air into Northern Japan.
Rain is currently being observed in parts of Hokkaido, with snow falling in some mountainous areas.



Tomorrow, Sunday the 18th, the region will remain under the influence of high pressure, bringing clear skies and ideal weather for outdoor activities.
Conditions around Hokkaido are also expected to gradually improve, and it will be a good day for drying laundry.
Conversely, on the Pacific side of Western Japan, skies are likely to be cloudy, with a risk of localized rain?please take note.



At the start of the week, on Monday the 19th, a low-pressure system accompanied by a front will move northeast across the Sea of ??Japan, leading to a deterioration in the weather.
As this front moves slowly across the Honshu region, it may continue to affect the weather until around Wednesday.

Although conditions will temporarily improve during the latter half of the week, the arrival of moist air?associated with Typhoon No. 30?could lead to severe weather in the Southwestern Islands.
Please stay updated with the latest information.

[One-Month Forecast] Temperatures are expected to be above average nationwide over the coming month; caution is also advised regarding rainfall from typhoons, low-pressure systems, and weather fronts.

2026/10/16 19:41

On Thursday the 15th, the Japan Meteorological Agency (JMA) released its one-month forecast, covering the period from October 17 to November 16.

Over the coming month, temperatures are expected to be higher than average nationwide, as the country will likely be covered by warm air. Furthermore, the region will be susceptible to the influence of low-pressure systems and weather fronts; precipitation is expected to be above average along the Pacific coast of Eastern Japan, while in Northern Japan, the sea of Japan side of Eastern Japan, and Western Japan, precipitation will likely be near or above average.


These are the results based on numerical weather prediction models.

Regarding the one-month average sea-level pressure (left image), a trough of low pressure is projected near Japan. With pressure levels expected to be lower than average from Central China to the sea of Japan, and higher than average from Southern China to the area south of Japan, the pattern suggests that moist air from the south will easily flow into the region. Consequently, Northern, Eastern, and Western Japan are expected to be frequently affected by low-pressure systems and weather fronts.

Temperatures at an altitude of approximately 1,500 meters (right image) are projected to be higher than average, particularly across Northern, Eastern, and Western Japan, indicating that the entire country is likely to be covered by warm air.



These charts show the forecasts for average temperature, precipitation, and sunshine duration over the next month, as well as the weekly average temperature forecasts (expressed as probabilities in percent). With the country likely to be covered by warm air, average temperatures are expected to be higher than normal. In particular, temperatures are projected to be significantly above average across Northern, Eastern, and Western Japan during the first half of the period, and in the Okinawa and Amami regions at the start of the period.

Due to the frequent influence of low-pressure systems and weather fronts, precipitation is expected to be above average along the Pacific side of Eastern Japan, while Northern Japan, the sea of Japan side of Eastern Japan, and Western Japan can expect near-normal or above-normal precipitation.

Sunshine duration along the Pacific side of Eastern Japan and in Western Japan is expected to be near or below average. Although weather patterns will shift in cycles lasting a few days, there are likely to be fewer sunny days than usual.

While autumn weather often follows a cycle of change every few days, the coming month is expected to be characterized by a frequent susceptibility to low-pressure systems and weather fronts.
Precipitation is projected to be particularly heavy along the Pacific side of Eastern Japan.
As these systems may lead to localized heavy rainfall, please stay updated with the latest weather information and prepare for the possibility of heavy rain.
Additionally, close attention should be paid to the path of Typhoon No. 30, which is currently moving westward near the Chuuk Islands. Depending on its trajectory, it could potentially impact the Nansei Islands and the Japanese archipelago around next weekend.
Please make sure to check for regular updates on the typhoon.

[Perfect Weather for a Festival] A rock festival will be held on Miyakojima this Saturday, the 17th; with a high of 30°C, it will be warm enough to work up a sweat.

2026/10/16 17:13

A major rock festival will take place tomorrow, Saturday the 17th, on Miyakojima Island in Okinawa Prefecture. The event features a lineup of high-profile artists?acts known for successful performances in stadiums and arenas?making it a major highlight for the island.

In preparation for the festival, we have compiled the local weather forecast for this weekend, along with some tips to ensure a comfortable experience.

Weather for Saturday, the 17th
The weather on Saturday, the 17th, will be sunny with occasional clouds. There is a low chance of rain, and with a high of 30C (86F) and a low of 25C (77F), it will be warm?perfect for a summer-style music festival.



Tomorrow, the 17th, a migratory high-pressure system will cover much of the area around Honshu, extending its influence to Miyakojima. As a result, the island can expect plenty of sunshine, making for a pleasant day for the festival. While some clouds may roll in during the afternoon due to humid air, the chance of rain remains low, ensuring a comfortable day overall.



Tips for Attendees
With clear, sunny skies expected throughout the weekend on Miyakojima, you will likely be exposed to the sun for most of the day. Although a temperature of 30C is relatively manageable, the "feels-like" temperature can be significantly higher in outdoor areas with little shade. Please be sure to stay hydrated and replenish your salt intake regularly.
Additionally, as the venue is located near the ocean, please be mindful of the wind. On Saturday the 17th, winds of around 6 meters per second are expected on Miyakojima, with the possibility of stronger gusts at times.
Please take care to ensure that hats and lightweight personal items are not blown away.

Be sure to check the latest weather updates frequently, and take good care of your health so you can fully enjoy the live concert experience!

Typhoon No. 30: Despite Uncertain Track, Okinawa Should Stay Alert in the Latter Half of Next Week(Analysis by Weather Forecaster Junko Miyake)

2026/10/16 14:35

At 3 PM yesterday, on the 15th, Typhoon No. 30 formed over the far southeastern waters of Japan.

Let's take a look at the projected path of Typhoon No. 30.
The typhoon is currently near the Truk Islands, moving westward.

Its maximum sustained winds near the center are 23 meters per second, meaning it currently has only a strong-wind area and no storm-force wind area yet.

The typhoon is expected to intensify as it moves.
By tomorrow, Saturday, it is forecast to develop a storm-force wind area.
By Sunday, it is expected to strengthen into a "strong" typhoon.

It will continue to intensify as it moves westward, and by Monday the 19th, it is forecast to reach a "very strong" intensity.
Around the middle of next week, its central pressure is expected to drop to around 935 hPa.

There is a possibility that the typhoon will approach Okinawa while maintaining very strong intensity.

As for its future track, it is still uncertain whether it will continue westward or turn toward Okinawa.
At this stage, the direction beyond that point remains unclear.

However, one thing we can say is that the typhoon may approach the Okinawa region while maintaining very strong intensity.

Typhoons intensify by drawing moisture from warm ocean waters.
This map shows sea surface temperatures as of yesterday.
The yellow line marks areas with temperatures of 27C or higher.
South of that line, waters are warmer than 27C-conditions favorable for typhoon development.
The waters around Okinawa are also within this 27C-and-above zone.

Because of this, the typhoon is likely to maintain very strong intensity and may approach Okinawa.
Please continue to pay close attention to updates on its track.

Now, let's look at the weekend weather for Okinawa.

This weekend, many areas will see sunshine under the influence of high pressure.
Daytime temperatures will exceed 30C in many places, which is 2 to 3 degrees higher than average for this time of year.
Heatstroke precautions are still necessary.
Both Saturday and Sunday will see moderately strong easterly winds.

Here is the weekly forecast.
Through around Tuesday next week, many areas will continue to see sunshine.
On Wednesday the 21st, rain is expected to begin in Minami-Daito as the region starts to feel the effects of the typhoon.

Later next week, depending on the typhoon's track, Okinawa may experience severe weather.
Please stay updated with the latest typhoon information.

Widespread Autumn Sunshine This Weekend: Typhoon No. 30 Strengthening and Stormy Weather Expected Next Week(Analysis by Certified Weather Forecaster Junko Miyake)

2026/10/16 13:57

Clear autumn weather is expected to spread across many areas this weekend.
Let's take a look at the weekend weather charts.

High pressure will cover much of the country on both Saturday and Sunday.
On Saturday in particular, strong high pressure will bring sunny autumn skies nationwide.
The air will be dry, creating crisp and comfortable conditions.

By Sunday the 18th, the center of the high-pressure system will shift slightly eastward.
Moist air flowing around the edge of the high will make clouds more likely to develop over western Japan.

Now, let's look at the weekend weather.
Sunny conditions will dominate both days.
From the Kanto region westward, many areas will see temperatures rise above 25C, reaching summer-like levels.
It will feel warm enough for short sleeves during the day, but the temperature difference between morning and evening will be large, so please be mindful of the changing conditions.

Next, let's move on to Typhoon No. 30, which formed over the far southeastern waters of Japan at 3 PM yesterday.

The typhoon is currently near the Truk Islands, moving westward.
Its maximum sustained winds are 23 meters per second, meaning it has not yet developed a storm-force wind area-only a strong-wind area at this stage.

However, the typhoon is expected to intensify as it continues westward.
By Saturday the 17th, it is forecast to develop a storm-force wind area.
On Sunday the 18th, it will strengthen further, and by Monday the 19th, it is expected to reach a very strong intensity.

Early next week, the central pressure is forecast to drop even more, reaching around 935 hPa by Wednesday the 21st.

The future track remains uncertain, and it is still unclear whether it will turn northward or continue westward.
However, one thing is certain: the typhoon is likely to maintain very strong intensity as it moves.

Typhoons intensify by drawing moisture from warm ocean waters.
This map shows sea surface temperatures as of yesterday.
The yellow line marks areas with temperatures of 27C or higher-a key threshold for typhoon development.
Waters around Okinawa, as well as south of Shikoku and Kyushu, are above 27C, providing favorable conditions for further strengthening.

Because of this, the typhoon may continue to intensify and could move northward while maintaining strong intensity.
Please stay updated with the latest information.

Finally, here is the weekly forecast.
This weekend will feature widespread autumn sunshine.
On Sunday, clouds will increase compared to Saturday, and some areas along the Pacific side of Shikoku may see rain.

The weather pattern will shift significantly after Sunday.
Rain will become more frequent next week.

A series of developing low-pressure systems will pass over northern Japan, especially on Monday the 19th and Wednesday the 21st, bringing the risk of stormy weather.
Later next week, Typhoon No. 30 may approach Japan.
Please continue to monitor the latest typhoon updates.