Bombaye climate — normals and trends
Bombaye has a temperate oceanic climate, averaging 9.7 °C annually with 847 mm of rain per year.
Climate normals · ERA5
BombayeWallonia
- coords
- 50.73°, 5.75°
- 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
9.7°C
Average daily high
13.0°C
Average daily low
6.3°C
Annual rainfall
847mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
19.4km/h
Seasonal range
15.6°C
Frost days (< 0 °C)
56 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
158 d/yr
Annual snowfall
34.1 cm
Average feels-like high
10.5 °C
Average feels-like low
3.3 °C
Average peak gust
38.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
40.0 °C
25 July 2019
Coldest day
-20.9 °C
1 January 1979
Wettest day
60 mm
14 July 2021
Windiest day
57.3 km/h
24 November 1984
Strongest gust
128.5 km/h
24 November 1984
Hottest feels-like
40.4 °C
6 July 1957
Coldest feels-like
-25.9 °C
1 January 1979
Snowiest day
13.4 cm
15 February 1987
Sunniest day
15.6 h
2 July 2018
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 | 4.6 °C | +0.6 °C | 157 mm | +82 mm |
| Feb | 6.6 °C | +1.4 °C | 34 mm | -33 mm |
| Mar | 12.7 °C | +3.7 °C | 13 mm | -56 mm |
| Apr | 16.3 °C | +3.5 °C | 55 mm | -7 mm |
| May | 19.4 °C | +2.5 °C | 51 mm | -21 mm |
| Jun | 24.0 °C | +4.2 °C | 67 mm | -7 mm |
| Jul | 24.0 °C | +2.5 °C | 99 mm | +20 mm |
| Aug | 24.1 °C | +2.8 °C | 29 mm | -44 mm |
| Sep | 19.1 °C | +0.9 °C | 90 mm | +29 mm |
| Oct | 13.5 °C | -0.2 °C | 84 mm | +20 mm |
| Nov | 10.0 °C | +1.8 °C | 65 mm | -7 mm |
| Dec | 7.9 °C | +2.8 °C | 33 mm | -46 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.
Bombaye (Belgium) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 847 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 (17.5 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in July.
Bombaye averages 56 frost days, 3 hot days (≥ 30 °C) and 158 rainy days per year.
Bombaye has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 73 to 39 per year over the period.
The hottest day of the period reached 40.0 °C (on 25 July 2019) and the coldest -20.9 °C (on 1 January 1979).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Frequently asked questions
What is the climate of Bombaye?
Bombaye has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 847 mm of precipitation per year.
What is the hottest day ever recorded in Bombaye?
The hottest day measured in Bombaye between 1940 and 2025 was 25 July 2019, reaching 40.0 °C.
What is the coldest day in Bombaye?
The coldest day measured in Bombaye between 1940 and 2025 was 1 January 1979, at -20.9 °C.
Does it snow in Bombaye?
Yes. Bombaye gets on average 34.1 cm of snow per year and has around 56 frost days.
Has the climate of Bombaye warmed?
Yes: Bombaye warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bombaye?
The wettest day measured in Bombaye between 1940 and 2025 was 14 July 2021, with 60 mm of rain in 24 hours.
What was the windiest day in Bombaye?
The windiest day measured in Bombaye between 1940 and 2025 was 24 November 1984, with winds reaching 57.3 km/h.
What is the warmest month in Bombaye?
The warmest month in Bombaye is July (17.5 °C on average); the coldest is January (1.9 °C).
How much does it rain in Bombaye?
Bombaye receives on average 847 mm of precipitation per year, spread over about 158 rainy days.
Is it sunny in Bombaye?
Bombaye gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bombaye?
The heaviest 24-hour snowfall measured in Bombaye between 1940 and 2025 was 15 February 1987, with 13.4 cm.
Are there tropical nights in Bombaye?
Yes: Bombaye has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bombaye?
In Bombaye, between 1940 and 2025, the highest apparent temperature reached 40.4 °C on 6 July 1957, and the lowest was -25.9 °C on 1 January 1979.
These forecasts and records come from our own weather API. Developer documentation →
Compare Bombaye with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bombaye