Karatsu weather
At 7:00 AM local time it was clear and 15°C (59°F). Mostly light, on-and-off rain; heavier around 3 AM, 4 AM, 5 AM (13.3 mm total). Best months for weather: Oct–Nov. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Karatsu, Saga, Japan.
Current conditions
- Clouds
- 0%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 3 AM, 4 AM, 5 AM (13.3 mm total)
Daily Forecast
Best Time to Visit
Peak season Oct–NovOff season Jun–Jul, Jan–Mar
About Karatsu weather
Is it raining in Karatsu right now?
No. It’s clear and 15° right now. Mostly light, on-and-off rain; heavier around 3 AM, 4 AM, 5 AM (13.3 mm total).
What’s the weather like in Karatsu this week?
Over the next 7 days, expect highs of 16–23° and lows of 9–18°. Rain is likely on 2 of 7 days (Monday, Thursday). The driest day looks like Sunday.
Has it been raining in Karatsu lately?
In the past 7 days, Karatsu had 4 rainy days and 168.2 mm of rain in total.
What should I pack for Karatsu?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Karatsu weather by month
When is the best time to visit Karatsu?
Based on weather alone, the best time to visit Karatsu is Oct–Nov, according to NASA's 2001–2025 climate averages. Jun–Jul, Jan–Mar tends to be the least pleasant. Average highs run from 9°C (49°F) in January to 30°C (85°F) in August.
What is the rainiest month in Karatsu?
July is the wettest month, with about 347 mm (13.7 in) of rain on average. January is the driest, with about 69 mm (2.7 in).
What is the hottest month in Karatsu?
August is the warmest, with average highs of 30°C (85°F) and lows of 25°C (77°F). January is the coolest, with highs of 9°C (49°F) and lows of 5°C (41°F).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months