Bojonegoro climate — normals and trends
Bojonegoro (Indonesia) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.7 °C and it receives 1,993 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 October (28.1 °C on average) and the coldest is January (26.0 °C). Rainfall peaks in January.
Bojonegoro averages 0 frost days, 324 hot days (≥ 30 °C) and 208 rainy days per year.
Bojonegoro has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.3 °C (on 9 November 1990) and the coldest 17.1 °C (on 8 July 1942).
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
BojonegoroEast Java
- coords
- -7.15°, 111.88°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.7°C
Average daily high
32.1°C
Average daily low
23.0°C
Annual rainfall
1,993mm
Sunshine / day
10.3h
Mean relative humidity
78%
Average peak wind
10.2km/h
Seasonal range
2.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
324 d/yr
Rainy days (≥ 1 mm)
208 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.4 °C
Average feels-like low
27.1 °C
Average peak gust
26.7 km/h
Tropical nights (≥ 20 °C)
358 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.56 · 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
39.3 °C
9 November 1990
Coldest day
17.1 °C
8 July 1942
Wettest day
193 mm
9 June 2025
Windiest day
29.6 km/h
5 March 1977
Strongest gust
73.8 km/h
24 January 2012
Hottest feels-like
45.3 °C
2 December 2019
Coldest feels-like
17.5 °C
2 July 1986
Sunniest day
12.4 h
24 December 2023
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 | 31.6 °C | +0.8 °C | 399 mm | +72 mm |
| Feb | 32.0 °C | +1.2 °C | 272 mm | -51 mm |
| Mar | 31.8 °C | +0.6 °C | 371 mm | +62 mm |
| Apr | 31.7 °C | +0.4 °C | 204 mm | +14 mm |
| May | 31.4 °C | 0.0 °C | 308 mm | +196 mm |
| Jun | 31.0 °C | -0.6 °C | 249 mm | +192 mm |
| Jul | 31.3 °C | -0.8 °C | 16 mm | -12 mm |
| Aug | 32.4 °C | -0.6 °C | 69 mm | +53 mm |
| Sep | 33.9 °C | -0.1 °C | 69 mm | +42 mm |
| Oct | 34.2 °C | -0.2 °C | 223 mm | +134 mm |
| Nov | 31.8 °C | -1.4 °C | 343 mm | +133 mm |
| Dec | 32.2 °C | +0.6 °C | 315 mm | +8 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 Bojonegoro?
Bojonegoro has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.7 °C and it receives 1,993 mm of precipitation per year.
What is the hottest day ever recorded in Bojonegoro?
The hottest day measured in Bojonegoro between 1940 and 2025 was 9 November 1990, reaching 39.3 °C.
What is the coldest day in Bojonegoro?
The coldest day measured in Bojonegoro between 1940 and 2025 was 8 July 1942, at 17.1 °C.
Does it snow in Bojonegoro?
Almost never: Bojonegoro sees virtually no snow, with about 0 frost days per year.
Has the climate of Bojonegoro warmed?
Yes: Bojonegoro warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bojonegoro?
The wettest day measured in Bojonegoro between 1940 and 2025 was 9 June 2025, with 193 mm of rain in 24 hours.
What was the windiest day in Bojonegoro?
The windiest day measured in Bojonegoro between 1940 and 2025 was 5 March 1977, with winds reaching 29.6 km/h.
What is the warmest month in Bojonegoro?
The warmest month in Bojonegoro is October (28.1 °C on average); the coldest is January (26.0 °C).
How much does it rain in Bojonegoro?
Bojonegoro receives on average 1,993 mm of precipitation per year, spread over about 208 rainy days.
Is it sunny in Bojonegoro?
Bojonegoro gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Bojonegoro?
Yes: Bojonegoro has on average 358 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bojonegoro?
In Bojonegoro, between 1940 and 2025, the highest apparent temperature reached 45.3 °C on 2 December 2019, and the lowest was 17.5 °C on 2 July 1986.
Compare Bojonegoro with another city
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Nearby cities
The climate around Bojonegoro