Sagara climate — normals and trends
Sagara (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.4 °C and it receives 2,287 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 (26.2 °C on average) and the coldest is January (7.1 °C). Rainfall peaks in June.
Sagara averages 1 frost days, 5 hot days (≥ 30 °C) and 158 rainy days per year.
Sagara has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 34.2 °C (on 15 August 2020) and the coldest -2.4 °C (on 27 February 1981).
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
SagaraShizuoka
- coords
- 34.69°, 138.20°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.4°C
Average daily high
18.4°C
Average daily low
14.6°C
Annual rainfall
2,287mm
Sunshine / day
8.7h
Mean relative humidity
74%
Average peak wind
24.7km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
158 d/yr
Annual snowfall
1.9 cm
Average feels-like high
17.8 °C
Average feels-like low
12.8 °C
Average peak gust
40.1 km/h
Tropical nights (≥ 20 °C)
108 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.52 · 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
34.2 °C
15 August 2020
Coldest day
-2.4 °C
27 February 1981
Wettest day
223 mm
12 October 2019
Windiest day
80.4 km/h
1 October 2018
Strongest gust
158.4 km/h
1 October 2018
Hottest feels-like
41.4 °C
17 August 2024
Coldest feels-like
-10.8 °C
26 February 1981
Snowiest day
15.0 cm
15 February 1968
Sunniest day
14.0 h
18 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 | 10.5 °C | +1.0 °C | 48 mm | -31 mm |
| Feb | 9.6 °C | -0.4 °C | 38 mm | -67 mm |
| Mar | 14.2 °C | +1.6 °C | 196 mm | +19 mm |
| Apr | 17.5 °C | +1.0 °C | 178 mm | -21 mm |
| May | 20.6 °C | +0.6 °C | 335 mm | +101 mm |
| Jun | 25.4 °C | +2.5 °C | 207 mm | -92 mm |
| Jul | 28.6 °C | +2.2 °C | 176 mm | -89 mm |
| Aug | 29.7 °C | +1.9 °C | 100 mm | -110 mm |
| Sep | 27.6 °C | +2.2 °C | 209 mm | -51 mm |
| Oct | 22.2 °C | +1.1 °C | 226 mm | -2 mm |
| Nov | 17.0 °C | +0.2 °C | 44 mm | -103 mm |
| Dec | 13.2 °C | +1.2 °C | 125 mm | +41 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 Sagara?
Sagara has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.4 °C and it receives 2,287 mm of precipitation per year.
What is the hottest day ever recorded in Sagara?
The hottest day measured in Sagara between 1940 and 2025 was 15 August 2020, reaching 34.2 °C.
What is the coldest day in Sagara?
The coldest day measured in Sagara between 1940 and 2025 was 27 February 1981, at -2.4 °C.
Does it snow in Sagara?
Yes. Sagara gets on average 1.9 cm of snow per year and has around 1 frost days.
Has the climate of Sagara warmed?
Yes: Sagara warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sagara?
The wettest day measured in Sagara between 1940 and 2025 was 12 October 2019, with 223 mm of rain in 24 hours.
What was the windiest day in Sagara?
The windiest day measured in Sagara between 1940 and 2025 was 1 October 2018, with winds reaching 80.4 km/h.
What is the warmest month in Sagara?
The warmest month in Sagara is August (26.2 °C on average); the coldest is January (7.1 °C).
How much does it rain in Sagara?
Sagara receives on average 2,287 mm of precipitation per year, spread over about 158 rainy days.
Is it sunny in Sagara?
Sagara gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sagara?
The heaviest 24-hour snowfall measured in Sagara between 1940 and 2025 was 15 February 1968, with 15.0 cm.
Are there tropical nights in Sagara?
Yes: Sagara has on average 108 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sagara?
In Sagara, between 1940 and 2025, the highest apparent temperature reached 41.4 °C on 17 August 2024, and the lowest was -10.8 °C on 26 February 1981.
Compare Sagara with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sagara