Daigo climate — normals and trends
Daigo has a humid subtropical climate, averaging 12.9 °C annually with 1,380 mm of rain per year.
Climate normals · ERA5
DaigoIbaraki
- coords
- 36.77°, 140.35°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
12.9°C
Average daily high
17.4°C
Average daily low
9.0°C
Annual rainfall
1,380mm
Sunshine / day
8.3h
Mean relative humidity
73%
Average peak wind
12.8km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
78 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
147 d/yr
Annual snowfall
34.1 cm
Average feels-like high
16.7 °C
Average feels-like low
7.8 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
54 d/yr
Solar radiation
13.6 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.65 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
37.2 °C
2 August 2022
Coldest day
-17.4 °C
22 February 1968
Wettest day
153 mm
28 June 1966
Windiest day
46.1 km/h
25 September 1966
Strongest gust
145.4 km/h
27 September 1959
Hottest feels-like
43.2 °C
10 August 2013
Coldest feels-like
-22.0 °C
22 February 1968
Snowiest day
29.5 cm
8 February 2014
Sunniest day
14.1 h
16 June 1953
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.4 °C | +2.1 °C | 34 mm | -8 mm |
| Feb | 7.8 °C | +0.8 °C | 7 mm | -45 mm |
| Mar | 13.0 °C | +2.3 °C | 113 mm | +19 mm |
| Apr | 18.1 °C | +1.6 °C | 110 mm | -2 mm |
| May | 21.3 °C | +0.2 °C | 194 mm | +64 mm |
| Jun | 27.5 °C | +3.5 °C | 137 mm | -24 mm |
| Jul | 31.2 °C | +3.5 °C | 102 mm | -81 mm |
| Aug | 31.7 °C | +2.7 °C | 101 mm | -61 mm |
| Sep | 28.1 °C | +3.2 °C | 130 mm | -49 mm |
| Oct | 19.9 °C | +0.7 °C | 134 mm | -8 mm |
| Nov | 15.2 °C | +1.3 °C | 40 mm | -37 mm |
| Dec | 9.9 °C | +1.2 °C | 65 mm | +17 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Daigo (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 1,380 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 (24.9 °C on average) and the coldest is January (1.6 °C). Rainfall peaks in July.
Daigo averages 78 frost days, 27 hot days (≥ 30 °C) and 147 rainy days per year.
Daigo has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 100 to 56 per year over the period.
The hottest day of the period reached 37.2 °C (on 2 August 2022) and the coldest -17.4 °C (on 22 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.
Compare Daigo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Daigo
Other cities — Japan
Frequently asked questions
What is the climate of Daigo?
Daigo has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 1,380 mm of precipitation per year.
What is the hottest day ever recorded in Daigo?
The hottest day measured in Daigo between 1940 and 2025 was 2 August 2022, reaching 37.2 °C.
What is the coldest day in Daigo?
The coldest day measured in Daigo between 1940 and 2025 was 22 February 1968, at -17.4 °C.
Does it snow in Daigo?
Yes. Daigo gets on average 34.1 cm of snow per year and has around 78 frost days.
Has the climate of Daigo warmed?
Yes: Daigo warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Daigo?
The wettest day measured in Daigo between 1940 and 2025 was 28 June 1966, with 153 mm of rain in 24 hours.
What was the windiest day in Daigo?
The windiest day measured in Daigo between 1940 and 2025 was 25 September 1966, with winds reaching 46.1 km/h.
What is the warmest month in Daigo?
The warmest month in Daigo is August (24.9 °C on average); the coldest is January (1.6 °C).
How much does it rain in Daigo?
Daigo receives on average 1,380 mm of precipitation per year, spread over about 147 rainy days.
Is it sunny in Daigo?
Daigo gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Daigo?
The heaviest 24-hour snowfall measured in Daigo between 1940 and 2025 was 8 February 2014, with 29.5 cm.
Are there tropical nights in Daigo?
Yes: Daigo has on average 54 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Daigo?
In Daigo, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 10 August 2013, and the lowest was -22.0 °C on 22 February 1968.
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