Akashi climate — normals and trends
Akashi (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.1 °C and it receives 1,447 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (27.5 °C on average) and the coldest is January (5.5 °C). Rainfall peaks in September.
Akashi averages 5 frost days, 29 hot days (≥ 30 °C) and 121 rainy days per year.
Akashi has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 11 to 0 per year over the period.
The hottest day of the period reached 35.9 °C (on 1 August 2001) and the coldest -6.3 °C (on 4 February 1978).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
AkashiHyōgo
- coords
- 34.66°, 135.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.1°C
Average daily high
18.8°C
Average daily low
13.4°C
Annual rainfall
1,447mm
Sunshine / day
8.9h
Mean relative humidity
73%
Average peak wind
18.0km/h
Seasonal range
22.0°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
29 d/yr
Rainy days (≥ 1 mm)
121 d/yr
Annual snowfall
4.6 cm
Average feels-like high
18.7 °C
Average feels-like low
12.5 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
101 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.69 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
35.9 °C
1 August 2001
Coldest day
-6.3 °C
4 February 1978
Wettest day
182 mm
16 September 1972
Windiest day
75.5 km/h
27 September 1991
Strongest gust
160.6 km/h
30 August 2004
Hottest feels-like
43.7 °C
20 August 2023
Coldest feels-like
-11.6 °C
26 February 1981
Snowiest day
23.1 cm
15 February 1968
Sunniest day
14.0 h
10 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.5 °C | +0.2 °C | 21 mm | -24 mm |
| Feb | 7.3 °C | -1.2 °C | 26 mm | -31 mm |
| Mar | 12.2 °C | +0.4 °C | 84 mm | -8 mm |
| Apr | 17.7 °C | +0.7 °C | 62 mm | -58 mm |
| May | 22.0 °C | +0.5 °C | 193 mm | +52 mm |
| Jun | 26.4 °C | +1.6 °C | 184 mm | -16 mm |
| Jul | 31.2 °C | +2.7 °C | 71 mm | -123 mm |
| Aug | 31.6 °C | +1.6 °C | 183 mm | +48 mm |
| Sep | 29.2 °C | +2.4 °C | 191 mm | -11 mm |
| Oct | 23.0 °C | +1.5 °C | 217 mm | +84 mm |
| Nov | 16.4 °C | +0.2 °C | 31 mm | -48 mm |
| Dec | 12.1 °C | +1.0 °C | 35 mm | -14 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Akashi?
Akashi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.1 °C and it receives 1,447 mm of precipitation per year.
What is the hottest day ever recorded in Akashi?
The hottest day measured in Akashi between 1940 and 2025 was 1 August 2001, reaching 35.9 °C.
What is the coldest day in Akashi?
The coldest day measured in Akashi between 1940 and 2025 was 4 February 1978, at -6.3 °C.
Does it snow in Akashi?
Yes. Akashi gets on average 4.6 cm of snow per year and has around 5 frost days.
Has the climate of Akashi warmed?
Yes: Akashi warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Akashi?
The wettest day measured in Akashi between 1940 and 2025 was 16 September 1972, with 182 mm of rain in 24 hours.
What was the windiest day in Akashi?
The windiest day measured in Akashi between 1940 and 2025 was 27 September 1991, with winds reaching 75.5 km/h.
What is the warmest month in Akashi?
The warmest month in Akashi is August (27.5 °C on average); the coldest is January (5.5 °C).
How much does it rain in Akashi?
Akashi receives on average 1,447 mm of precipitation per year, spread over about 121 rainy days.
Is it sunny in Akashi?
Akashi gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Akashi?
The heaviest 24-hour snowfall measured in Akashi between 1940 and 2025 was 15 February 1968, with 23.1 cm.
Are there tropical nights in Akashi?
Yes: Akashi has on average 101 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Akashi?
In Akashi, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 20 August 2023, and the lowest was -11.6 °C on 26 February 1981.
Compare Akashi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Akashi