Ogi climate — normals and trends
Ogi (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.9 °C and it receives 1,823 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 (27.1 °C on average) and the coldest is January (5.4 °C). Rainfall peaks in June.
Ogi averages 16 frost days, 42 hot days (≥ 30 °C) and 139 rainy days per year.
Ogi has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 28 to 4 per year over the period.
The hottest day of the period reached 36.9 °C (on 4 September 2010) and the coldest -6.7 °C (on 18 February 1968).
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
OgiSaga
- coords
- 33.28°, 130.20°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.9°C
Average daily high
19.8°C
Average daily low
12.4°C
Annual rainfall
1,823mm
Sunshine / day
7.9h
Mean relative humidity
76%
Average peak wind
13.3km/h
Seasonal range
21.7°C
Frost days (< 0 °C)
16 d/yr
Hot days (≥ 30 °C)
42 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
5.5 cm
Average feels-like high
20.1 °C
Average feels-like low
12.0 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
91 d/yr
Solar radiation
13.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.73 · 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
36.9 °C
4 September 2010
Coldest day
-6.7 °C
18 February 1968
Wettest day
215 mm
2 June 1988
Windiest day
60.5 km/h
10 September 1956
Strongest gust
184.3 km/h
31 August 1987
Hottest feels-like
43.4 °C
5 August 2024
Coldest feels-like
-11.5 °C
16 February 1977
Snowiest day
25.5 cm
15 February 1968
Sunniest day
13.7 h
14 June 2004
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 | 9.3 °C | +0.5 °C | 20 mm | -39 mm |
| Feb | 8.0 °C | -1.9 °C | 51 mm | -29 mm |
| Mar | 14.7 °C | +1.1 °C | 152 mm | +37 mm |
| Apr | 19.9 °C | +1.0 °C | 82 mm | -69 mm |
| May | 22.8 °C | -0.2 °C | 326 mm | +148 mm |
| Jun | 27.1 °C | +1.3 °C | 475 mm | +150 mm |
| Jul | 32.9 °C | +3.5 °C | 104 mm | -193 mm |
| Aug | 32.0 °C | +1.3 °C | 267 mm | +85 mm |
| Sep | 30.0 °C | +2.7 °C | 215 mm | +25 mm |
| Oct | 25.0 °C | +2.8 °C | 63 mm | -40 mm |
| Nov | 17.8 °C | +1.0 °C | 29 mm | -54 mm |
| Dec | 13.0 °C | +1.7 °C | 54 mm | -7 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 Ogi?
Ogi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.9 °C and it receives 1,823 mm of precipitation per year.
What is the hottest day ever recorded in Ogi?
The hottest day measured in Ogi between 1940 and 2025 was 4 September 2010, reaching 36.9 °C.
What is the coldest day in Ogi?
The coldest day measured in Ogi between 1940 and 2025 was 18 February 1968, at -6.7 °C.
Does it snow in Ogi?
Yes. Ogi gets on average 5.5 cm of snow per year and has around 16 frost days.
Has the climate of Ogi warmed?
Yes: Ogi warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ogi?
The wettest day measured in Ogi between 1940 and 2025 was 2 June 1988, with 215 mm of rain in 24 hours.
What was the windiest day in Ogi?
The windiest day measured in Ogi between 1940 and 2025 was 10 September 1956, with winds reaching 60.5 km/h.
What is the warmest month in Ogi?
The warmest month in Ogi is August (27.1 °C on average); the coldest is January (5.4 °C).
How much does it rain in Ogi?
Ogi receives on average 1,823 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Ogi?
Ogi gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ogi?
The heaviest 24-hour snowfall measured in Ogi between 1940 and 2025 was 15 February 1968, with 25.5 cm.
Are there tropical nights in Ogi?
Yes: Ogi has on average 91 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ogi?
In Ogi, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 5 August 2024, and the lowest was -11.5 °C on 16 February 1977.
Compare Ogi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ogi