Bau-Bau climate — normals and trends
Bau-Bau (Indonesia) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.4 °C and it receives 1,932 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 November (27.1 °C on average) and the coldest is July (25.6 °C). Rainfall peaks in December.
Bau-Bau averages 0 frost days, 20 hot days (≥ 30 °C) and 237 rainy days per year.
Bau-Bau has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.9 °C (on 29 October 2001) and the coldest 21.9 °C (on 10 September 1941).
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
Bau-BauSoutheast Sulawesi
- coords
- -5.46°, 122.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.4°C
Average daily high
28.3°C
Average daily low
24.9°C
Annual rainfall
1,932mm
Sunshine / day
10.7h
Mean relative humidity
83%
Average peak wind
14.8km/h
Seasonal range
1.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
237 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.4 °C
Average feels-like low
29.1 °C
Average peak gust
29.0 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.82 · 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
31.9 °C
29 October 2001
Coldest day
21.9 °C
10 September 1941
Wettest day
167 mm
4 April 2005
Windiest day
35.1 km/h
2 April 2021
Strongest gust
69.8 km/h
2 April 2021
Hottest feels-like
39.8 °C
4 December 1997
Coldest feels-like
24.1 °C
17 August 2004
Sunniest day
12.3 h
19 November 1946
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 | 29.1 °C | +0.8 °C | 371 mm | +104 mm |
| Feb | 29.4 °C | +1.1 °C | 271 mm | +10 mm |
| Mar | 29.4 °C | +1.0 °C | 296 mm | +38 mm |
| Apr | 29.1 °C | +0.6 °C | 217 mm | +25 mm |
| May | 29.3 °C | +1.0 °C | 334 mm | +174 mm |
| Jun | 28.1 °C | +0.3 °C | 347 mm | +228 mm |
| Jul | 28.2 °C | +0.8 °C | 84 mm | +10 mm |
| Aug | 28.9 °C | +1.2 °C | 12 mm | -30 mm |
| Sep | 29.8 °C | +1.5 °C | 46 mm | +6 mm |
| Oct | 30.0 °C | +1.0 °C | 118 mm | +44 mm |
| Nov | 29.3 °C | +0.3 °C | 291 mm | +134 mm |
| Dec | 28.8 °C | +0.5 °C | 331 mm | +42 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 Bau-Bau?
Bau-Bau has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.4 °C and it receives 1,932 mm of precipitation per year.
What is the hottest day ever recorded in Bau-Bau?
The hottest day measured in Bau-Bau between 1940 and 2025 was 29 October 2001, reaching 31.9 °C.
What is the coldest day in Bau-Bau?
The coldest day measured in Bau-Bau between 1940 and 2025 was 10 September 1941, at 21.9 °C.
Does it snow in Bau-Bau?
Almost never: Bau-Bau sees virtually no snow, with about 0 frost days per year.
Has the climate of Bau-Bau warmed?
Yes: Bau-Bau warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bau-Bau?
The wettest day measured in Bau-Bau between 1940 and 2025 was 4 April 2005, with 167 mm of rain in 24 hours.
What was the windiest day in Bau-Bau?
The windiest day measured in Bau-Bau between 1940 and 2025 was 2 April 2021, with winds reaching 35.1 km/h.
What is the warmest month in Bau-Bau?
The warmest month in Bau-Bau is November (27.1 °C on average); the coldest is July (25.6 °C).
How much does it rain in Bau-Bau?
Bau-Bau receives on average 1,932 mm of precipitation per year, spread over about 237 rainy days.
Is it sunny in Bau-Bau?
Bau-Bau gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Bau-Bau?
Yes: Bau-Bau has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bau-Bau?
In Bau-Bau, between 1940 and 2025, the highest apparent temperature reached 39.8 °C on 4 December 1997, and the lowest was 24.1 °C on 17 August 2004.
Compare Bau-Bau with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bau-Bau