Posušje climate — normals and trends
Posušje (Bosnia and Herzegovina) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 1,748 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 (20.6 °C on average) and the coldest is January (0.4 °C). Rainfall peaks in November.
Posušje averages 85 frost days, 12 hot days (≥ 30 °C) and 140 rainy days per year.
Posušje 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 108 to 62 per year over the period.
The hottest day of the period reached 37.3 °C (on 10 August 2017) and the coldest -25.1 °C (on 16 February 1940).
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
PosušjeFederation of Bosnia and Herzegovina
- coords
- 43.47°, 17.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
15.3°C
Average daily low
5.9°C
Annual rainfall
1,748mm
Sunshine / day
9.3h
Mean relative humidity
74%
Average peak wind
11.0km/h
Seasonal range
20.2°C
Frost days (< 0 °C)
85 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
140 d/yr
Annual snowfall
95.4 cm
Average feels-like high
14.0 °C
Average feels-like low
3.8 °C
Average peak gust
34.6 km/h
Tropical nights (≥ 20 °C)
1 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 = 0.65 · 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).
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
37.3 °C
10 August 2017
Coldest day
-25.1 °C
16 February 1940
Wettest day
133 mm
13 October 1975
Windiest day
34.6 km/h
5 February 2020
Strongest gust
124.9 km/h
13 December 1957
Hottest feels-like
39.1 °C
17 July 2024
Coldest feels-like
-30.9 °C
23 January 1942
Snowiest day
40.5 cm
11 February 1944
Sunniest day
14.5 h
15 June 2025
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 | 8.4 °C | +4.1 °C | 119 mm | -36 mm |
| Feb | 8.8 °C | +2.7 °C | 129 mm | -31 mm |
| Mar | 13.2 °C | +3.4 °C | 363 mm | +209 mm |
| Apr | 16.7 °C | +2.5 °C | 118 mm | -38 mm |
| May | 19.7 °C | +0.6 °C | 158 mm | +21 mm |
| Jun | 29.2 °C | +6.1 °C | 7 mm | -85 mm |
| Jul | 28.7 °C | +2.6 °C | 80 mm | +22 mm |
| Aug | 27.9 °C | +1.6 °C | 144 mm | +75 mm |
| Sep | 24.1 °C | +2.3 °C | 113 mm | -13 mm |
| Oct | 15.7 °C | -0.6 °C | 113 mm | -71 mm |
| Nov | 12.0 °C | +1.7 °C | 248 mm | -6 mm |
| Dec | 9.3 °C | +3.5 °C | 71 mm | -133 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 Posušje?
Posušje has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 1,748 mm of precipitation per year.
What is the hottest day ever recorded in Posušje?
The hottest day measured in Posušje between 1940 and 2025 was 10 August 2017, reaching 37.3 °C.
What is the coldest day in Posušje?
The coldest day measured in Posušje between 1940 and 2025 was 16 February 1940, at -25.1 °C.
Does it snow in Posušje?
Yes. Posušje gets on average 95.4 cm of snow per year and has around 85 frost days.
Has the climate of Posušje warmed?
Yes: Posušje warmed by +3.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Posušje?
The wettest day measured in Posušje between 1940 and 2025 was 13 October 1975, with 133 mm of rain in 24 hours.
What was the windiest day in Posušje?
The windiest day measured in Posušje between 1940 and 2025 was 5 February 2020, with winds reaching 34.6 km/h.
What is the warmest month in Posušje?
The warmest month in Posušje is July (20.6 °C on average); the coldest is January (0.4 °C).
How much does it rain in Posušje?
Posušje receives on average 1,748 mm of precipitation per year, spread over about 140 rainy days.
Is it sunny in Posušje?
Posušje gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Posušje?
The heaviest 24-hour snowfall measured in Posušje between 1940 and 2025 was 11 February 1944, with 40.5 cm.
Are there tropical nights in Posušje?
Yes: Posušje has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Posušje?
In Posušje, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 17 July 2024, and the lowest was -30.9 °C on 23 January 1942.
Compare Posušje with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Posušje