Hikiso climate — normals and trends
Hikiso (Japan) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 1,589 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 (26.4 °C on average) and the coldest is January (2.7 °C). Rainfall peaks in June.
Hikiso averages 65 frost days, 39 hot days (≥ 30 °C) and 147 rainy days per year.
Hikiso has warmed by +3.0 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 93 to 37 per year over the period.
The hottest day of the period reached 37.7 °C (on 1 August 2001) and the coldest -12.4 °C (on 16 February 1951).
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
HikisoNara
- coords
- 34.54°, 135.74°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.2°C
Average daily high
18.6°C
Average daily low
10.0°C
Annual rainfall
1,589mm
Sunshine / day
8.8h
Mean relative humidity
74%
Average peak wind
12.7km/h
Seasonal range
23.7°C
Frost days (< 0 °C)
65 d/yr
Hot days (≥ 30 °C)
39 d/yr
Rainy days (≥ 1 mm)
147 d/yr
Annual snowfall
19.9 cm
Average feels-like high
18.3 °C
Average feels-like low
9.2 °C
Average peak gust
36.6 km/h
Tropical nights (≥ 20 °C)
73 d/yr
Solar radiation
14.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.0 °C
since 1940
+0.4 °C per decade · r² = 0.72 · 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
37.7 °C
1 August 2001
Coldest day
-12.4 °C
16 February 1951
Wettest day
162 mm
22 October 2017
Windiest day
60.7 km/h
26 September 1959
Strongest gust
192.6 km/h
26 September 1959
Hottest feels-like
43.3 °C
8 August 1994
Coldest feels-like
-16.9 °C
17 February 1977
Snowiest day
30.9 cm
15 February 1968
Sunniest day
14.0 h
3 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 | 7.9 °C | +1.0 °C | 35 mm | -27 mm |
| Feb | 6.7 °C | -1.0 °C | 39 mm | -36 mm |
| Mar | 13.6 °C | +1.8 °C | 88 mm | -26 mm |
| Apr | 19.7 °C | +2.0 °C | 71 mm | -59 mm |
| May | 22.6 °C | +0.5 °C | 257 mm | +101 mm |
| Jun | 27.5 °C | +2.2 °C | 204 mm | -32 mm |
| Jul | 33.5 °C | +4.4 °C | 61 mm | -143 mm |
| Aug | 33.2 °C | +2.5 °C | 145 mm | +9 mm |
| Sep | 30.3 °C | +3.6 °C | 130 mm | -51 mm |
| Oct | 22.5 °C | +1.8 °C | 221 mm | +75 mm |
| Nov | 15.6 °C | +0.4 °C | 39 mm | -49 mm |
| Dec | 11.5 °C | +1.9 °C | 61 mm | -1 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 Hikiso?
Hikiso has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,589 mm of precipitation per year.
What is the hottest day ever recorded in Hikiso?
The hottest day measured in Hikiso between 1940 and 2025 was 1 August 2001, reaching 37.7 °C.
What is the coldest day in Hikiso?
The coldest day measured in Hikiso between 1940 and 2025 was 16 February 1951, at -12.4 °C.
Does it snow in Hikiso?
Yes. Hikiso gets on average 19.9 cm of snow per year and has around 65 frost days.
Has the climate of Hikiso warmed?
Yes: Hikiso warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hikiso?
The wettest day measured in Hikiso between 1940 and 2025 was 22 October 2017, with 162 mm of rain in 24 hours.
What was the windiest day in Hikiso?
The windiest day measured in Hikiso between 1940 and 2025 was 26 September 1959, with winds reaching 60.7 km/h.
What is the warmest month in Hikiso?
The warmest month in Hikiso is August (26.4 °C on average); the coldest is January (2.7 °C).
How much does it rain in Hikiso?
Hikiso receives on average 1,589 mm of precipitation per year, spread over about 147 rainy days.
Is it sunny in Hikiso?
Hikiso gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hikiso?
The heaviest 24-hour snowfall measured in Hikiso between 1940 and 2025 was 15 February 1968, with 30.9 cm.
Are there tropical nights in Hikiso?
Yes: Hikiso has on average 73 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hikiso?
In Hikiso, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 8 August 1994, and the lowest was -16.9 °C on 17 February 1977.
Compare Hikiso with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hikiso