Siuliban climate — normals and trends
Siuliban (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 25.3 °C and it receives 1,291 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 May (31.2 °C on average) and the coldest is January (17.2 °C). Rainfall peaks in July.
Siuliban averages 0 frost days, 213 hot days (≥ 30 °C) and 137 rainy days per year.
Siuliban has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 48.0 °C (on 27 May 1944) and the coldest 5.5 °C (on 25 January 1953).
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
SiulibanJharkhand
- coords
- 23.75°, 86.78°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.3°C
Average daily high
31.0°C
Average daily low
20.7°C
Annual rainfall
1,291mm
Sunshine / day
9.7h
Mean relative humidity
71%
Average peak wind
12.3km/h
Seasonal range
14.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
213 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.8 °C
Average feels-like low
23.1 °C
Average peak gust
27.2 km/h
Tropical nights (≥ 20 °C)
222 d/yr
Solar radiation
18.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.21 · 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
48.0 °C
27 May 1944
Coldest day
5.5 °C
25 January 1953
Wettest day
206 mm
27 September 1978
Windiest day
44.6 km/h
4 June 1982
Strongest gust
87.8 km/h
25 May 2009
Hottest feels-like
49.1 °C
29 May 2024
Coldest feels-like
3.0 °C
25 December 1945
Sunniest day
13.0 h
14 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 24.5 °C | +0.2 °C | 0 mm | -16 mm |
| Feb | 29.5 °C | +1.7 °C | 8 mm | -12 mm |
| Mar | 34.0 °C | +0.8 °C | 16 mm | -7 mm |
| Apr | 36.9 °C | -0.4 °C | 39 mm | +8 mm |
| May | 35.9 °C | -1.8 °C | 121 mm | +39 mm |
| Jun | 33.6 °C | -1.2 °C | 249 mm | +33 mm |
| Jul | 31.0 °C | -0.5 °C | 522 mm | +216 mm |
| Aug | 31.3 °C | +0.2 °C | 313 mm | +42 mm |
| Sep | 32.3 °C | +1.3 °C | 248 mm | +29 mm |
| Oct | 31.3 °C | +1.1 °C | 77 mm | -7 mm |
| Nov | 27.9 °C | +0.1 °C | 1 mm | -13 mm |
| Dec | 23.4 °C | -1.5 °C | 0 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 Siuliban?
Siuliban has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 25.3 °C and it receives 1,291 mm of precipitation per year.
What is the hottest day ever recorded in Siuliban?
The hottest day measured in Siuliban between 1940 and 2025 was 27 May 1944, reaching 48.0 °C.
What is the coldest day in Siuliban?
The coldest day measured in Siuliban between 1940 and 2025 was 25 January 1953, at 5.5 °C.
Does it snow in Siuliban?
Almost never: Siuliban sees virtually no snow, with about 0 frost days per year.
Has the climate of Siuliban warmed?
Yes: Siuliban warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Siuliban?
The wettest day measured in Siuliban between 1940 and 2025 was 27 September 1978, with 206 mm of rain in 24 hours.
What was the windiest day in Siuliban?
The windiest day measured in Siuliban between 1940 and 2025 was 4 June 1982, with winds reaching 44.6 km/h.
What is the warmest month in Siuliban?
The warmest month in Siuliban is May (31.2 °C on average); the coldest is January (17.2 °C).
How much does it rain in Siuliban?
Siuliban receives on average 1,291 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Siuliban?
Siuliban gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Siuliban?
Yes: Siuliban has on average 222 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Siuliban?
In Siuliban, between 1940 and 2025, the highest apparent temperature reached 49.1 °C on 29 May 2024, and the lowest was 3.0 °C on 25 December 1945.
Compare Siuliban with another city
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Nearby cities
The climate around Siuliban