Onyar climate — normals and trends
Onyar (China) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 8.5 °C and it receives 476 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 July (22.1 °C on average) and the coldest is January (-8.1 °C). Rainfall peaks in May.
Onyar averages 138 frost days, 24 hot days (≥ 30 °C) and 84 rainy days per year.
Onyar has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 145 to 131 per year over the period.
The hottest day of the period reached 41.2 °C (on 9 August 1944) and the coldest -33.0 °C (on 30 November 1952).
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
OnyarXinjiang
- coords
- 43.85°, 81.78°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
14.6°C
Average daily low
3.2°C
Annual rainfall
476mm
Sunshine / day
10.0h
Mean relative humidity
61%
Average peak wind
13.1km/h
Seasonal range
30.2°C
Frost days (< 0 °C)
138 d/yr
Hot days (≥ 30 °C)
24 d/yr
Rainy days (≥ 1 mm)
84 d/yr
Annual snowfall
75.4 cm
Average feels-like high
12.4 °C
Average feels-like low
0.3 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
16.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.08 · p = 0.007
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
41.2 °C
9 August 1944
Coldest day
-33.0 °C
30 November 1952
Wettest day
42 mm
27 July 2007
Windiest day
54.0 km/h
12 December 1952
Strongest gust
108.7 km/h
7 December 1986
Hottest feels-like
40.7 °C
9 August 1944
Coldest feels-like
-38.9 °C
30 November 1952
Snowiest day
12.5 cm
5 March 1955
Sunniest day
15.0 h
6 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 | -1.7 °C | +0.5 °C | 18 mm | -4 mm |
| Feb | 1.8 °C | +1.5 °C | 12 mm | -14 mm |
| Mar | 11.3 °C | +2.6 °C | 34 mm | -10 mm |
| Apr | 21.0 °C | +3.5 °C | 14 mm | -42 mm |
| May | 27.6 °C | +5.5 °C | 49 mm | -13 mm |
| Jun | 30.5 °C | +4.8 °C | 36 mm | -9 mm |
| Jul | 32.7 °C | +4.7 °C | 12 mm | -25 mm |
| Aug | 29.8 °C | +2.6 °C | 13 mm | -25 mm |
| Sep | 24.8 °C | +1.7 °C | 53 mm | +12 mm |
| Oct | 18.0 °C | +1.6 °C | 31 mm | -14 mm |
| Nov | 11.6 °C | +3.9 °C | 24 mm | -11 mm |
| Dec | 5.6 °C | +5.1 °C | 27 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 Onyar?
Onyar has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 476 mm of precipitation per year.
What is the hottest day ever recorded in Onyar?
The hottest day measured in Onyar between 1940 and 2025 was 9 August 1944, reaching 41.2 °C.
What is the coldest day in Onyar?
The coldest day measured in Onyar between 1940 and 2025 was 30 November 1952, at -33.0 °C.
Does it snow in Onyar?
Yes. Onyar gets on average 75.4 cm of snow per year and has around 138 frost days.
Has the climate of Onyar warmed?
Yes: Onyar warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Onyar?
The wettest day measured in Onyar between 1940 and 2025 was 27 July 2007, with 42 mm of rain in 24 hours.
What was the windiest day in Onyar?
The windiest day measured in Onyar between 1940 and 2025 was 12 December 1952, with winds reaching 54.0 km/h.
What is the warmest month in Onyar?
The warmest month in Onyar is July (22.1 °C on average); the coldest is January (-8.1 °C).
How much does it rain in Onyar?
Onyar receives on average 476 mm of precipitation per year, spread over about 84 rainy days.
Is it sunny in Onyar?
Onyar gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in Onyar?
The heaviest 24-hour snowfall measured in Onyar between 1940 and 2025 was 5 March 1955, with 12.5 cm.
Are there tropical nights in Onyar?
Yes: Onyar has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Onyar?
In Onyar, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 9 August 1944, and the lowest was -38.9 °C on 30 November 1952.
Compare Onyar with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Onyar