worldweather

Weather in Osaka - 14-day forecast

Detailed weather forecast for Osaka, Japan: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Osaka
today🌧️ 27°💧 0.2 mm
Sun🌧️ 29°💧 18.8 mm
Mon🌧️ 24°💧 5.5 mm
Tue🌧️ 30°💧 0.4 mm
Wed🌧️ 25°💧 15.3 mm
Thu🌧️ 22°💧 16.1 mm
Fri🌧️ 22°💧 4 mm
Sat☁️ 27°💧 0.7 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Thursday 10 Sept in Osaka, the forecast high is 22°C. Typical daytime temperatures at this time of year range from 26°C to 29°C, so it will be exceptionally cool. It is cooler than 97% of similar days.

27°Ccooler than usual
usually 27°C–30°C
cooler than 72% of similar days
night: exceptionally warm rain: less rain than usual wind: stronger than usual
29°Cwarmer than usual
usually 26°C–30°C
warmer than 70% of similar days
night: exceptionally warm rain: more rain than usual wind: exceptionally strong
24°Cexceptionally cool
usually 26°C–30°C
cooler than 96% of similar days
night: exceptionally warm rain: more rain than usual wind: typical
30°Cwarmer than usual
usually 26°C–30°C
warmer than 78% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
25°Ccooler than usual
usually 26°C–30°C
cooler than 87% of similar days
night: warmer than usual rain: more rain than usual wind: typical
22°Cexceptionally cool
usually 26°C–29°C
cooler than 97% of similar days
night: near normal rain: more rain than usual wind: typical
22°Cexceptionally cool
usually 26°C–29°C
cooler than 96% of similar days
night: exceptionally warm rain: typical rainfall wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
20°28°35° 1981: 24°C1982: 26°C1983: 28°C1984: 26°C1985: 29°C1986: 28°C1987: 30°C1988: 27°C1989: 28°C1990: 29°C1991: 28°C1992: 27°C1993: 24°C1994: 30°C1995: 26°C1996: 27°C1997: 28°C1998: 28°C1999: 28°C2000: 28°C2001: 28°C2002: 28°C2003: 29°C2004: 28°C2005: 29°C2006: 28°C2007: 29°C2008: 29°C2009: 27°C2010: 30°C2011: 28°C2012: 28°C2013: 28°C2014: 27°C2015: 25°C2016: 29°C2017: 28°C2018: 27°C2019: 30°C2020: 29°C2021: 27°C2022: 29°C2023: 28°C2024: 31°C2025: 30°C 2026 forecast: 26°C current forecast 26°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 28°C by day. The coolest year was 1981 (24°C) and the warmest was 2024 (31°C). The current forecast averages 26°C - lower than in 91% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Osaka

Osaka - 14-day weather forecast infographic

Osaka 30 & 45-day weather - long-range outlook

Next 16 days · forecast
27°
around 25° at night · days with rain: 10
Weeks 3-4 · avg for September
28°
around 20° at night · rain chance 41%
Weeks 5-7 · avg for October
23°
around 16° at night · rain chance 41%
The 30 & 45-day outlook for Osaka: the next 16 days are a numerical forecast updated daily - on average 27° by day and 25° at night. Further out we rely on multi-year climate averages: around 28° in September, and about 23° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Osaka

Saturday5 September 2026
🌧️27°light rain
sunrise 05:33 · sunset 18:20 · night 27° · evening 29° · rain 0.15 mm · humidity 66% · wind 5 m/s · clouds 56%
Sunday6 September 2026
🌧️29°heavy rain
sunrise 05:34 · sunset 18:19 · night 24° · evening 24° · rain 18.78 mm · humidity 58% · wind 9 m/s · clouds 100%
Monday7 September 2026
🌧️24°moderate rain
sunrise 05:35 · sunset 18:17 · night 25° · evening 27° · rain 5.45 mm · humidity 85% · wind 4 m/s · clouds 100%
Tuesday8 September 2026
🌧️30°light rain
sunrise 05:35 · sunset 18:16 · night 27° · evening 29° · rain 0.36 mm · humidity 56% · wind 4 m/s · clouds 63%
Wednesday9 September 2026
🌧️25°moderate rain
sunrise 05:36 · sunset 18:14 · night 22° · evening 23° · rain 15.31 mm · humidity 88% · wind 4 m/s · clouds 100%
Thursday10 September 2026
🌧️22°moderate rain
sunrise 05:37 · sunset 18:13 · night 21° · evening 21° · rain 16.14 mm · humidity 84% · wind 4 m/s · clouds 100%
Friday11 September 2026
🌧️22°light rain
sunrise 05:37 · sunset 18:12 · night 23° · evening 23° · rain 3.99 mm · humidity 89% · wind 4 m/s · clouds 100%
Saturday12 September 2026
☁️27°broken clouds
sunrise 05:38 · sunset 18:10 · night 25° · evening 26° · rain 0.66 mm · humidity 63% · wind 4 m/s · clouds 81%
Sunday13 September 2026
🌧️30°light rain
sunrise 05:39 · sunset 18:09 · night 27° · evening 28° · rain 0.21 mm · humidity 58% · wind 3 m/s · clouds 53%
Monday14 September 2026
🌧️31°light rain
sunrise 05:40 · sunset 18:07 · night 28° · evening 29° · rain 0.69 mm · humidity 51% · wind 3 m/s · clouds 97%
Tuesday15 September 2026
🌧️31°light rain
sunrise 05:40 · sunset 18:06 · night 27° · evening 28° · rain 4.89 mm · humidity 57% · wind 4 m/s · clouds 77%
Wednesday16 September 2026
🌧️29°moderate rain
sunrise 05:41 · sunset 18:05 · night 24° · evening 25° · rain 11.76 mm · humidity 66% · wind 2 m/s · clouds 83%
Thursday17 September 2026
🌧️29°light rain
sunrise 05:42 · sunset 18:03 · night 24° · evening 25° · rain 0.15 mm · humidity 40% · wind 7 m/s · clouds 4%
Friday18 September 2026
🌤️28°a few clouds
sunrise 05:42 · sunset 18:02 · night 26° · evening 27° · rain 41.07 mm · humidity 45% · wind 4 m/s · clouds 24%
Saturday19 September 2026
🌧️28°light rain
sunrise 05:43 · sunset 18:00 · night 25° · evening 26° · rain 1.17 mm · humidity 46% · wind 5 m/s · clouds 100%
Sunday20 September 2026
🌧️29°light rain
sunrise 05:44 · sunset 17:59 · night 25° · evening 25° · rain 5.67 mm · humidity 48% · wind 5 m/s · clouds 60%

UV index in Osaka - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTOsaka03681111+6.6UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 30 min7Sat5.095Sun6.097Mon7.097Tue8.091Wed9.092Thu10.094Fri11.092Sat12.097Sun13.097Mon14.095Tue15.092Wed16.096Thu17.095Fri18.097Sat19.097Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Osaka is 7 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Sea temperature - Osaka

Water today
29°C
Week avg
29°C
Waves today
0.2 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 29°C6.09 29°C7.09 29°C8.09 29°C9.09 29°C10.09 28°C11.09 28°C12.09 29°C13.09 29°C
Average sea temperature through the year:
Jan 9°CFeb 8°CMar 11°CApr 15°CMay 20°CJun 24°CJul 29°CAug 30°CSep 29°COct 24°CNov 18°CDec 13°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Osaka weather through the year

Osaka - annual climate

Warmest, driest months on average: April, May, June, September.

Upcoming public holidays in Japan: Respect for the Aged Day — 21 September · Citizen's Holiday — 22 September · Autumnal Equinox Day — 23 September. Full calendar and travel notes

Nearby and related places

KyotoNagoyaTakayamaShizuokaHiroshimaNikkōTokyo

FAQ - Osaka weather

What is the weather like in Osaka today?
Today it is about 27° during the day and 27° at night, light rain.
How far ahead can I check the forecast for Osaka?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.