Karatsu

Karatsu Shi, Saga-ken, Japan

Unlock Minute-by-Minute Forecast

See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.

Current Weather

25°

Partly Cloudy

Feels Like: 25°

Min: 22°

Max: 26°

The next few hours will be partly cloudy, with today reaching 26°C and dropping to 23°C. The coming days will be light rain throughout the day.

Does this forecast seem accurate?

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

26° 25° 25° 24° 24° 24° 24° 23° 23° 23° 23° 23° 23° 23° 23° 24° 24° 24° 24° 24° 24° 24° 23° 23°
80%
80%
80%
100%
100%
100%
98%
98%
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
Today
Tomorrow

Daylight Hours

06:15

Sunrise

18:06

Sunset

11 hours 50 minutes of sunlight today

Moon

Waxing Gibbous

17:20

Moonrise

05:25

Moonset

Daily Forecast

Today

22°
26°

Saturday

23°
24°

Sunday

23°
25°

Monday

22°
25°

Tuesday

23°
25°

Wednesday

23°
25°

Thursday

20°
24°

Friday

19°
22°

Saturday

19°
23°

Sunday

20°
23°

Air Quality Data Available

Upgrade to access real-time air quality data for Karatsu.

UV Index

Wear sunscreen
4 Moderate
Low Extreme

Humidity

64% Comfortable
Low High

Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for Karatsu.

View stargazing score

Weather in Karatsu today, September 25, 2026

Cloud cover dominates in Karatsu on September 25, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells.

The temperature range runs from about 22°C up to 26°C. Moisture in the air spans 62%-84%, with the highest values around 23:00. Winds stay light, near 3.8 km/h by 15:00, so the day feels still more than breezy.

The afternoon keeps an overcast feel, as cloud reaches about 68% around 23:00. Outdoor plans may still want a flexible backup. Views remain open at about 16.1 km. Daylight runs from 06:15 to 18:06, lasting 11 hours 50 minutes of sunlight today.

In short, cloud leads the story in Karatsu on September 25, 2026; expect limited sun and a peak around 26°C.

Frequently asked questions about weather in Karatsu

How warm does it get in Karatsu?

The warmest month in Karatsu is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.

How cold does it get in Karatsu?

The coldest month in Karatsu is January, with average low temperatures of 6°C. The average temperature during this period is around 8°C.

What is the wettest time of year in Karatsu?

The wettest month in Karatsu is July, with an average of 253mm of precipitation.

What is the driest time of year in Karatsu?

The driest month in Karatsu is December, with an average of 75mm of precipitation.

View full climate insights for Karatsu →

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)