Atami climate — normals and trends
Atami (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.1 °C and it receives 2,028 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 (25.4 °C on average) and the coldest is January (5.5 °C). Rainfall peaks in June.
Atami averages 9 frost days, 13 hot days (≥ 30 °C) and 156 rainy days per year.
Atami has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 19 to 0 per year over the period.
The hottest day of the period reached 35.1 °C (on 29 July 2024) and the coldest -11.3 °C (on 13 February 1942).
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
AtamiShizuoka
- coords
- 35.09°, 139.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.1°C
Average daily high
18.0°C
Average daily low
12.4°C
Annual rainfall
2,028mm
Sunshine / day
8.6h
Mean relative humidity
77%
Average peak wind
15.1km/h
Seasonal range
19.9°C
Frost days (< 0 °C)
9 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
17.7 cm
Average feels-like high
18.0 °C
Average feels-like low
11.5 °C
Average peak gust
45.7 km/h
Tropical nights (≥ 20 °C)
79 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
35.1 °C
29 July 2024
Coldest day
-11.3 °C
13 February 1942
Wettest day
243 mm
12 October 2019
Windiest day
67.4 km/h
1 October 2018
Strongest gust
211.7 km/h
1 October 2018
Hottest feels-like
42.7 °C
3 August 2025
Coldest feels-like
-15.5 °C
13 February 1942
Snowiest day
34.4 cm
15 February 1968
Sunniest day
14.0 h
4 July 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 | 10.2 °C | +1.8 °C | 45 mm | -32 mm |
| Feb | 9.7 °C | +1.0 °C | 27 mm | -76 mm |
| Mar | 14.1 °C | +2.5 °C | 215 mm | +45 mm |
| Apr | 18.1 °C | +1.8 °C | 134 mm | -42 mm |
| May | 21.1 °C | +0.8 °C | 291 mm | +93 mm |
| Jun | 26.6 °C | +3.4 °C | 168 mm | -86 mm |
| Jul | 30.2 °C | +3.3 °C | 124 mm | -91 mm |
| Aug | 30.8 °C | +2.5 °C | 79 mm | -105 mm |
| Sep | 28.3 °C | +3.2 °C | 159 mm | -67 mm |
| Oct | 21.1 °C | +1.0 °C | 184 mm | -34 mm |
| Nov | 16.3 °C | +0.7 °C | 43 mm | -88 mm |
| Dec | 12.5 °C | +1.5 °C | 108 mm | +32 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 Atami?
Atami has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.1 °C and it receives 2,028 mm of precipitation per year.
What is the hottest day ever recorded in Atami?
The hottest day measured in Atami between 1940 and 2025 was 29 July 2024, reaching 35.1 °C.
What is the coldest day in Atami?
The coldest day measured in Atami between 1940 and 2025 was 13 February 1942, at -11.3 °C.
Does it snow in Atami?
Yes. Atami gets on average 17.7 cm of snow per year and has around 9 frost days.
Has the climate of Atami warmed?
Yes: Atami warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Atami?
The wettest day measured in Atami between 1940 and 2025 was 12 October 2019, with 243 mm of rain in 24 hours.
What was the windiest day in Atami?
The windiest day measured in Atami between 1940 and 2025 was 1 October 2018, with winds reaching 67.4 km/h.
What is the warmest month in Atami?
The warmest month in Atami is August (25.4 °C on average); the coldest is January (5.5 °C).
How much does it rain in Atami?
Atami receives on average 2,028 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in Atami?
Atami gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Atami?
The heaviest 24-hour snowfall measured in Atami between 1940 and 2025 was 15 February 1968, with 34.4 cm.
Are there tropical nights in Atami?
Yes: Atami has on average 79 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Atami?
In Atami, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 3 August 2025, and the lowest was -15.5 °C on 13 February 1942.
Compare Atami with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Atami