Samāstipur climate — normals and trends
Samāstipur has a hot-summer mediterranean climate, averaging 25.5 °C annually with 1,235 mm of rain per year.
Climate normals · ERA5
SamāstipurBihar
- coords
- 25.86°, 85.78°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
25.5°C
Average daily high
31.1°C
Average daily low
20.8°C
Annual rainfall
1,235mm
Sunshine / day
10.0h
Mean relative humidity
68%
Average peak wind
14.9km/h
Seasonal range
15.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
226 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.7 °C
Average feels-like low
22.8 °C
Average peak gust
30.2 km/h
Tropical nights (≥ 20 °C)
221 d/yr
Solar radiation
18.0 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.22 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
46.5 °C
25 May 1957
Coldest day
3.6 °C
9 January 2013
Wettest day
293 mm
21 September 2000
Windiest day
47.5 km/h
10 November 1995
Strongest gust
84.6 km/h
10 November 1995
Hottest feels-like
49.8 °C
9 June 2015
Coldest feels-like
0.5 °C
31 January 1964
Sunniest day
13.0 h
29 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 21.8 °C | -1.3 °C | 0 mm | -19 mm |
| Feb | 27.3 °C | +0.6 °C | 0 mm | -17 mm |
| Mar | 32.4 °C | -0.4 °C | 8 mm | -11 mm |
| Apr | 35.5 °C | -1.7 °C | 36 mm | +12 mm |
| May | 36.2 °C | -1.5 °C | 46 mm | -4 mm |
| Jun | 36.1 °C | +0.4 °C | 121 mm | -50 mm |
| Jul | 33.9 °C | +1.5 °C | 204 mm | -134 mm |
| Aug | 32.7 °C | +0.6 °C | 279 mm | +1 mm |
| Sep | 33.4 °C | +1.7 °C | 232 mm | +8 mm |
| Oct | 31.1 °C | +0.2 °C | 318 mm | +240 mm |
| Nov | 28.5 °C | 0.0 °C | 0 mm | -8 mm |
| Dec | 22.2 °C | -2.5 °C | 0 mm | -8 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Samāstipur (India) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 25.5 °C and it receives 1,235 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 (31.5 °C on average) and the coldest is January (16.3 °C). Rainfall peaks in July.
Samāstipur averages 0 frost days, 226 hot days (≥ 30 °C) and 123 rainy days per year.
Samāstipur has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 46.5 °C (on 25 May 1957) and the coldest 3.6 °C (on 9 January 2013).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Samāstipur with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Samāstipur
Other cities — India
Frequently asked questions
What is the climate of Samāstipur?
Samāstipur has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 1,235 mm of precipitation per year.
What is the hottest day ever recorded in Samāstipur?
The hottest day measured in Samāstipur between 1940 and 2025 was 25 May 1957, reaching 46.5 °C.
What is the coldest day in Samāstipur?
The coldest day measured in Samāstipur between 1940 and 2025 was 9 January 2013, at 3.6 °C.
Does it snow in Samāstipur?
Almost never: Samāstipur sees virtually no snow, with about 0 frost days per year.
Has the climate of Samāstipur warmed?
Yes: Samāstipur warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Samāstipur?
The wettest day measured in Samāstipur between 1940 and 2025 was 21 September 2000, with 293 mm of rain in 24 hours.
What was the windiest day in Samāstipur?
The windiest day measured in Samāstipur between 1940 and 2025 was 10 November 1995, with winds reaching 47.5 km/h.
What is the warmest month in Samāstipur?
The warmest month in Samāstipur is May (31.5 °C on average); the coldest is January (16.3 °C).
How much does it rain in Samāstipur?
Samāstipur receives on average 1,235 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Samāstipur?
Samāstipur gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Samāstipur?
Yes: Samāstipur has on average 221 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Samāstipur?
In Samāstipur, between 1940 and 2025, the highest apparent temperature reached 49.8 °C on 9 June 2015, and the lowest was 0.5 °C on 31 January 1964.
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