Rumoi weather
At 12:45 PM local time it was cloudy and 5°C (41°F). Light rain for 11 of the next 24 hours (under 1 mm/h, 1.9 mm total) — cloudy, but fine to be out. Best months for weather: May–Sep. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Rumoi, Hokkaido, Japan.
Current conditions
- Clouds
- 98%
- Chance of rain
- 67%
- Rain
- 0.1 mm/h
Hourly Forecast
Light rain for 11 of the next 24 hours (under 1 mm/h, 1.9 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Mar
About Rumoi weather
Is it raining in Rumoi right now?
No. It’s cloudy and 5° right now. Light rain for 11 of the next 24 hours (under 1 mm/h, 1.9 mm total) — cloudy, but fine to be out.
What’s the weather like in Rumoi this week?
Over the next 7 days, expect highs of 5–15° and lows of -1–5°. Rain is likely on 7 of 7 days (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday). The driest day looks like Thursday.
Has it been raining in Rumoi lately?
In the past 7 days, Rumoi had 5 rainy days and 38.0 mm of rain in total.
What should I pack for Rumoi?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Rumoi weather by month
When is the best time to visit Rumoi?
Based on weather alone, the best time to visit Rumoi is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Mar tends to be the least pleasant. Average highs run from -4°C (25°F) in January to 24°C (76°F) in August.
What is the rainiest month in Rumoi?
August is the wettest month, with about 145 mm (5.7 in) of rain on average. April is the driest, with about 52 mm (2.0 in).
What is the hottest month in Rumoi?
August is the warmest, with average highs of 24°C (76°F) and lows of 17°C (62°F). January is the coolest, with highs of -4°C (25°F) and lows of -9°C (16°F).
Does Rumoi have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is August at about 145 mm (5.7 in).
How warm is the sea in Rumoi?
The sea is warmest in August at about 25°C (76°F) and coolest in March at about 5°C (41°F). It is comfortable for swimming (22°C or more) in Jul–Sep.
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