Hannan weather
At 10:15 AM local time it was partly cloudy and 18°C (65°F). Mostly light, on-and-off rain; heavier around 9 AM (1.8 mm total). Best months for weather: Apr–May, Aug, Oct–Nov. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Hannan, Osaka, Japan.
Current conditions
- Clouds
- 58%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 9 AM (1.8 mm total)
Daily Forecast
Best Time to Visit
Peak season Apr–May, Aug, Oct–NovOff season Dec–Mar
About Hannan weather
Is it raining in Hannan right now?
No. It’s partly cloudy and 18° right now. Mostly light, on-and-off rain; heavier around 9 AM (1.8 mm total).
What’s the weather like in Hannan this week?
Over the next 7 days, expect highs of 16–22° and lows of 11–17°. Rain is likely on 3 of 7 days (Monday, Wednesday, Thursday). The driest day looks like Sunday.
Has it been raining in Hannan lately?
In the past 7 days, Hannan had 4 rainy days and 94.5 mm of rain in total.
What should I pack for Hannan?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Hannan weather by month
When is the best time to visit Hannan?
Based on weather alone, the best time to visit Hannan is Apr–May, Aug, Oct–Nov, according to NASA's 2001–2025 climate averages. Dec–Mar tends to be the least pleasant. Average highs run from 9°C (48°F) in January to 30°C (85°F) in August.
What is the rainiest month in Hannan?
July is the wettest month, with about 204 mm (8.0 in) of rain on average. January is the driest, with about 56 mm (2.2 in).
What is the hottest month in Hannan?
August is the warmest, with average highs of 30°C (85°F) and lows of 25°C (76°F). January is the coolest, with highs of 9°C (48°F) and lows of 4°C (40°F).
Does Hannan have a rainy season?
Yes. Jun–Jul, Sep–Oct is the rainy season (150 mm or more a month), while Jan is usually dry (under 60 mm).
How warm is the sea in Hannan?
The sea is warmest in August at about 29°C (84°F) and coolest in February at about 9°C (49°F). It is comfortable for swimming (22°C or more) in Jun–Oct.
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months