Katihar climate
Katihar (Bihar, India) has a monsoon-influenced humid subtropical climate (Köppen Cwa). The average temperature over the year is 26 °C78 °F, and about 1,229 mm48 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Katihar climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2374 | 947 | 1661 | 60.3 |
| Feb | 2883 | 1355 | 2069 | 90.3 |
| Mar | 3594 | 1864 | 2679 | 170.7 |
| Apr | 39102 | 2374 | 3188 | 502.0 |
| May | 39102 | 2680 | 3391 | 1144.5 |
| Jun | 3697 | 2781 | 3289 | 1917.5 |
| Jul | 3290 | 2680 | 2985 | 30912 |
| Aug | 3289 | 2679 | 2984 | 2228.7 |
| Sep | 3188 | 2577 | 2882 | 2208.7 |
| Oct | 3085 | 2170 | 2578 | 853.4 |
| Nov | 2780 | 1560 | 2170 | 40.2 |
| Dec | 2374 | 1051 | 1762 | 20.1 |
| Year | 39102 | 947 | 2678 | 1,22948 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 55% | 31% | 3.3 | 10:42 |
| Feb | 45% | 26% | 4.4 | 11:16 |
| Mar | 35% | 29% | 5.5 | 11:57 |
| Apr | 38% | 40% | 6.0 | 12:44 |
| May | 51% | 54% | 5.8 | 13:23 |
| Jun | 67% | 74% | 5.1 | 13:43 |
| Jul | 84% | 85% | 4.5 | 13:35 |
| Aug | 86% | 82% | 4.7 | 13:01 |
| Sep | 87% | 70% | 4.5 | 12:16 |
| Oct | 80% | 35% | 4.5 | 11:30 |
| Nov | 73% | 15% | 4.1 | 10:52 |
| Dec | 66% | 24% | 3.3 | 10:33 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Katihar is like
The warmest month is May, with an average high of 39 °C102 °F and a low of 26 °C80 °F. The coldest is January, when highs average 23 °C74 °F and lows 9 °C47 °F. There is a clear seasonal cycle, with 16.7 °C30 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,229 mm48 in of precipitation per year. The wettest three-month stretch is July–September, which brings 61% of the annual total. Months with less than 20 mm0.8 in on average: November–March. The wettest month is July (309 mm12 in), the driest is December (2 mm0.1 in).
Relative humidity ranges from 35% in March to 87% in September. The clearest skies (lowest average cloud amount, 15%) are typical of November. Average wind speed near the ground ranges from 4 km/h (3 mph) in November to 9 km/h (6 mph) in June. Daylight lasts from about 10.6 hours in December to 13.7 hours in June.
Best time to visit Katihar
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–February: average highs of 23 °C74 °F to 28 °C83 °F with 2 mm0.1 in to 9 mm0.3 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 32 °C90 °F, very wet (309 mm12 in) and humid (84% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Katihar
- Winter (December–February) — highs 2374 to 28 °C83 °F, lows 947 to 13 °C55 °F, about 6 mm0.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 3594 to 39 °C102 °F, lows 1864 to 26 °C80 °F, about 60 mm2.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Summer (June–August) — highs 3289 to 36 °C97 °F, lows 2679 to 27 °C81 °F, about 241 mm9.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 2780 to 31 °C88 °F, lows 1560 to 25 °C77 °F, about 103 mm4.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Katihar compares
Compared with Purnia, about 28 km to the north, Katihar has practically the same average temperature and receives 9% less precipitation (1,229 mm48 in vs 1,348 mm53 in). The difference is largest in May (0.6 °C1.1 °F warmer).
Of the 382 places in India covered by World Climates, Katihar is the 247th warmest by annual mean temperature and the 114th wettest by annual precipitation. See all of them on the India climate page.
Places in other countries with the most similar temperature and rainfall pattern: Lahan (Nepal, Cwa), Biratnagar (Nepal, Cwa) and Nawabganj (Bangladesh, Cwa).
Nearby places
- Purnia 28 km · 25 °C78 °F · 1,348 mm53 in
- Raiganj 56 km · 25 °C77 °F · 1,476 mm58 in
- Bhagalpur 68 km · 26 °C79 °F · 1,121 mm44 in
- Kishanganj 74 km · 25 °C77 °F · 1,701 mm67 in
- Malda 83 km · 26 °C78 °F · 1,317 mm52 in
- Saharsa 105 km · 26 °C78 °F · 1,164 mm46 in
- Biratnagar 106 km · 26 °C79 °F · 1,394 mm55 in
- Dinajpur 108 km · 25 °C77 °F · 1,669 mm66 in
Frequently asked questions
What is the warmest month in Katihar?
May is the warmest month in Katihar, with an average high of 39 °C (102 °F) and an average low of 26 °C (80 °F).
What is the coldest month in Katihar?
January is the coldest month, with an average high of 23 °C (74 °F) and an average low of 9 °C (47 °F).
When does it rain the most in Katihar?
July is the wettest month with about 309 mm (12.2 in) of precipitation; December is the driest with about 2 mm (0.1 in).
What is the best time to visit Katihar?
Judging by long-term averages, the most comfortable months are November–February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.