Buchanan climate — normals and trends
Buchanan (Liberia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 25.4 °C and it receives 2,811 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 April (26.3 °C on average) and the coldest is August (24.2 °C). Rainfall peaks in September.
Buchanan averages 0 frost days, 35 hot days (≥ 30 °C) and 325 rainy days per year.
Buchanan has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.1 °C (on 1 March 1943) and the coldest 18.2 °C (on 10 January 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
BuchananGrand Bassa County
- coords
- 5.88°, -10.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.4°C
Average daily high
28.2°C
Average daily low
23.5°C
Annual rainfall
2,811mm
Sunshine / day
9.1h
Mean relative humidity
88%
Average peak wind
11.4km/h
Seasonal range
2.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
35 d/yr
Rainy days (≥ 1 mm)
325 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.8 °C
Average feels-like low
27.8 °C
Average peak gust
26.3 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
15.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °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
34.1 °C
1 March 1943
Coldest day
18.2 °C
10 January 1957
Wettest day
256 mm
13 September 2011
Windiest day
24.1 km/h
10 August 1945
Strongest gust
46.8 km/h
10 August 1959
Hottest feels-like
42.0 °C
2 March 2020
Coldest feels-like
18.3 °C
6 January 1989
Sunniest day
12.1 h
6 June 1945
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 | 30.3 °C | +1.3 °C | 80 mm | -6 mm |
| Feb | 30.5 °C | +1.4 °C | 98 mm | -18 mm |
| Mar | 30.2 °C | +0.9 °C | 123 mm | -54 mm |
| Apr | 30.0 °C | +0.7 °C | 174 mm | -52 mm |
| May | 29.6 °C | +0.7 °C | 292 mm | +5 mm |
| Jun | 28.0 °C | +0.4 °C | 458 mm | +114 mm |
| Jul | 26.8 °C | +0.3 °C | 312 mm | +26 mm |
| Aug | 26.1 °C | -0.1 °C | 432 mm | +100 mm |
| Sep | 27.3 °C | +0.4 °C | 475 mm | +84 mm |
| Oct | 28.4 °C | +0.5 °C | 464 mm | +167 mm |
| Nov | 29.2 °C | +0.5 °C | 213 mm | +42 mm |
| Dec | 29.3 °C | +0.5 °C | 108 mm | +9 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 Buchanan?
Buchanan has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 25.4 °C and it receives 2,811 mm of precipitation per year.
What is the hottest day ever recorded in Buchanan?
The hottest day measured in Buchanan between 1940 and 2025 was 1 March 1943, reaching 34.1 °C.
What is the coldest day in Buchanan?
The coldest day measured in Buchanan between 1940 and 2025 was 10 January 1957, at 18.2 °C.
Does it snow in Buchanan?
Almost never: Buchanan sees virtually no snow, with about 0 frost days per year.
Has the climate of Buchanan warmed?
Yes: Buchanan warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Buchanan?
The wettest day measured in Buchanan between 1940 and 2025 was 13 September 2011, with 256 mm of rain in 24 hours.
What was the windiest day in Buchanan?
The windiest day measured in Buchanan between 1940 and 2025 was 10 August 1945, with winds reaching 24.1 km/h.
What is the warmest month in Buchanan?
The warmest month in Buchanan is April (26.3 °C on average); the coldest is August (24.2 °C).
How much does it rain in Buchanan?
Buchanan receives on average 2,811 mm of precipitation per year, spread over about 325 rainy days.
Is it sunny in Buchanan?
Buchanan gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
Are there tropical nights in Buchanan?
Yes: Buchanan has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Buchanan?
In Buchanan, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 2 March 2020, and the lowest was 18.3 °C on 6 January 1989.
Compare Buchanan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Buchanan