Ma On Shan climate — normals and trends
Ma On Shan (Hong Kong) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 22.5 °C and it receives 1,661 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 (28.4 °C on average) and the coldest is January (14.9 °C). Rainfall peaks in June.
Ma On Shan averages 0 frost days, 68 hot days (≥ 30 °C) and 163 rainy days per year.
Ma On Shan has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.2 °C (on 17 August 1990) and the coldest 1.2 °C (on 11 February 1957).
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
Ma On ShanSha Tin
- coords
- 22.41°, 114.24°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.5°C
Average daily high
24.8°C
Average daily low
20.6°C
Annual rainfall
1,661mm
Sunshine / day
8.9h
Mean relative humidity
80%
Average peak wind
17.0km/h
Seasonal range
13.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
68 d/yr
Rainy days (≥ 1 mm)
163 d/yr
Annual snowfall
0.0 cm
Average feels-like high
27.5 °C
Average feels-like low
22.2 °C
Average peak gust
37.7 km/h
Tropical nights (≥ 20 °C)
216 d/yr
Solar radiation
16.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.67 · 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
36.2 °C
17 August 1990
Coldest day
1.2 °C
11 February 1957
Wettest day
236 mm
19 October 1974
Windiest day
81.3 km/h
16 September 2018
Strongest gust
189.7 km/h
16 September 2018
Hottest feels-like
44.7 °C
30 May 2023
Coldest feels-like
-5.1 °C
11 February 1957
Snowiest day
0.4 cm
24 January 2016
Sunniest day
13.0 h
9 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 | 18.8 °C | +1.2 °C | 10 mm | -10 mm |
| Feb | 18.6 °C | +0.4 °C | 12 mm | -26 mm |
| Mar | 21.8 °C | +0.7 °C | 53 mm | -13 mm |
| Apr | 25.4 °C | +0.9 °C | 46 mm | -73 mm |
| May | 28.5 °C | +0.7 °C | 216 mm | -25 mm |
| Jun | 30.2 °C | +0.8 °C | 310 mm | +15 mm |
| Jul | 31.8 °C | +1.3 °C | 350 mm | +111 mm |
| Aug | 30.6 °C | +0.3 °C | 339 mm | +56 mm |
| Sep | 30.9 °C | +1.4 °C | 405 mm | +194 mm |
| Oct | 28.5 °C | +1.6 °C | 94 mm | +10 mm |
| Nov | 23.4 °C | +0.2 °C | 6 mm | -33 mm |
| Dec | 21.6 °C | +2.4 °C | 12 mm | -14 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 Ma On Shan?
Ma On Shan has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 1,661 mm of precipitation per year.
What is the hottest day ever recorded in Ma On Shan?
The hottest day measured in Ma On Shan between 1940 and 2025 was 17 August 1990, reaching 36.2 °C.
What is the coldest day in Ma On Shan?
The coldest day measured in Ma On Shan between 1940 and 2025 was 11 February 1957, at 1.2 °C.
Does it snow in Ma On Shan?
Almost never: Ma On Shan sees virtually no snow, with about 0 frost days per year.
Has the climate of Ma On Shan warmed?
Yes: Ma On Shan warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ma On Shan?
The wettest day measured in Ma On Shan between 1940 and 2025 was 19 October 1974, with 236 mm of rain in 24 hours.
What was the windiest day in Ma On Shan?
The windiest day measured in Ma On Shan between 1940 and 2025 was 16 September 2018, with winds reaching 81.3 km/h.
What is the warmest month in Ma On Shan?
The warmest month in Ma On Shan is July (28.4 °C on average); the coldest is January (14.9 °C).
How much does it rain in Ma On Shan?
Ma On Shan receives on average 1,661 mm of precipitation per year, spread over about 163 rainy days.
Is it sunny in Ma On Shan?
Ma On Shan gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ma On Shan?
The heaviest 24-hour snowfall measured in Ma On Shan between 1940 and 2025 was 24 January 2016, with 0.4 cm.
Are there tropical nights in Ma On Shan?
Yes: Ma On Shan has on average 216 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ma On Shan?
In Ma On Shan, between 1940 and 2025, the highest apparent temperature reached 44.7 °C on 30 May 2023, and the lowest was -5.1 °C on 11 February 1957.
Compare Ma On Shan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ma On Shan