Climate of Siliguri
Siliguri falls under the humid subtropical climate (Cwa), when using the Köppen climate classification. Warm summer, cool winter and a severe monsoon define Siliguri's climate. The annual mean temperature is 24 °C. Monthly mean temperatures vary from 16 °C in January to 28 °C in August. Summers are warm and humid with the maximum temperatures ranging between 26-32 °C. Though the mercury may cross the 36 degree mark during June, July and August. Winter lasts for three and a half months, mid November to February, with seasonal lows dipping 5-7 °C. The highest temperature ever recorded in Siliguri was 41.7 °C on 15 April 1952 and the lowest is 1.9 °C, which was recorded on 8 January 2018.
Rains brought by South-west monsoon from Bay of Bengal lash the city between June to September. It supplies the city with most of its annual rainfall (3248 mm). July is the wettest month of the year with an average of 903 mm. The city of Siliguri sees 134 rainy days per annum. The air is extremely humid and UV index is also high.
Weather Monitoring Station(s)
The weather station of Siliguri is located at Bagdogra Airport. WMO index of which is 42398.
Monthly Weather Conditions
January
January is the coldest month of the year when the average maximum temperature is 23°C and the average low temperature dips to 10°C. On an average, the mercury touches 25.6°C and drops to 6.5°C every January. The average rainfall is 12 mm. Average rainy day is 1, and the relative humidity in the air is 76%. Average UV index is 5.
Extremes
- Highest Temperature: 32.5°C on Jan 19, 1981
- Lowest Temperature: 1.9°C on Jan 8, 2018
- Highest 24 hours rainfall: 54.9 mm on Jan 9, 1989
- Wettest January: 69.4 mm in 1957
February
In February, the average high temperature is 25°C and the average low temperature is 12°C. Every February, the temperature goes up to 27.9°C and drops to 7.2°C. 28 mm of rain is observed with 3 rainy days. Relative humidity is 70%. Average UV index is 7.
Extremes
- Highest Temperature: 33.2°C on Feb 28, 1975
- Lowest Temperature: 3.5°C on Feb 5, 1964
- Highest 24 hours Rainfall: 60 mm, on Feb 6, 1976
- Wettest February: 114.5 mm in 2003
March
In March, the average high temperature is 29 °C and average low temperature is 15 °C. On an average, 32.5 °C rises every year and lows to 12.5 °C. Average rainfall is 48mm with 3 rainy days. Air humidity is reduced to 62% and UV index is 9.
Extremes
- Highest temperature: 38.1 °C on Mar 25, 1973.
- Lowest temperature: 6.2 °C on Mar 4, 1965.
- Highest 24 hours rainfall: 95.9mm, Mar 28, 1971.
- Wettest March: 157.4mm in 1998
April
May
June
July
August
September
October
November
December
Statistics through Weatherbox
Climate data for Siliguri (Bagdogra Airport), Extremes 1951-present
| |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 32.5 (90.5) |
33.2 (91.8) |
38.1 (100.6) |
41.7 (107.1) |
40.8 (105.4) |
39.6 (103.3) |
40.4 (104.7) |
40.0 (104.0) |
39.2 (102.6) |
36.6 (97.9) |
33.8 (92.8) |
32.6 (90.7) |
41.7 (107.1) |
| Mean maximum °C (°F) | 25.6 (78.1) |
27.9 (82.2) |
32.8 (91.0) |
34.9 (94.8) |
35.3 (95.5) |
36.3 (97.3) |
36.0 (96.8) |
36.7 (98.1) |
35.8 (96.4) |
33.5 (92.3) |
30.4 (86.7) |
27.2 (81.0) |
37.0 (98.6) |
| Average high °C (°F) | 23 (73) |
25 (77) |
29 (84) |
32 (90) |
32 (90) |
31 (88) |
31 (88) |
32 (90) |
31 (88) |
30 (86) |
27 (81) |
25 (77) |
29 (84) |
| Average low °C (°F) | 10 (50) |
12 (54) |
15 (59) |
20 (68) |
22 (72) |
24 (75) |
25 (77) |
25 (77) |
24 (75) |
21 (70) |
15 (59) |
11 (52) |
19 (66) |
| Mean minimum °C (°F) | 6.9 (44.4) |
7.2 (45.0) |
12.5 (54.5) |
16.5 (61.7) |
18.6 (65.5) |
22.0 (71.6) |
23.4 (74.1) |
23.6 (74.5) |
21.9 (71.4) |
16.8 (62.2) |
11.9 (53.4) |
7.7 (45.9) |
6.5 (43.7) |
| Record low °C (°F) | 1.9 (35.4) |
3.5 (38.3) |
6.2 (43.2) |
9.6 (49.3) |
15.0 (59.0) |
20.0 (68.0) |
21.0 (69.8) |
18.4 (65.1) |
19.8 (67.6) |
12.3 (54.1) |
6.4 (43.5) |
2.4 (36.3) |
1.9 (35.4) |
| Average precipitation mm (inches) | 12 (0.5) |
28 (1.1) |
48 (1.9) |
99 (3.9) |
300 (11.8) |
658 (25.9) |
804 (31.7) |
640 (25.2) |
549 (21.6) |
156 (6.1) |
25 (1.0) |
20 (0.8) |
3,339 (131.5) |
| Average rainy days | 1 | 3 | 3 | 8 | 18 | 20 | 27 | 26 | 16 | 8 | 3 | 1 | 134 |
| Average relative humidity (%) | 76 | 70 | 62 | 79 | 83 | 89 | 92 | 86 | 82 | 75 | 69 | 76 | 78 |
| Average ultraviolet index | 5 | 7 | 9 | 11 | 12 | 13 | 14 | 13 | 11 | 8 | 5 | 4 | 9 |
| Source #1: normal temperatures[1][2]Ultraviolet Index [3] | |||||||||||||
| Source #2: Extremes(India Meteorological Department[4]), Mean maximum and Mean minimum temperatures[5] | |||||||||||||
Extremes Overview
Temperature
- The highest temperature ever recorded in Siliguri was 41.7 °C, recorded on 15 April 1952.
- The lowest temperature was 1.9 °C, which was reported to have dropped on 8 January 2018.
Rainfall
- On 21 July 1988, Siliguri recorded 395.5 mm rainfall, which is the highest in 24 hours.
- The wettest month was July 1995, when 1731.2 mm of rain fell on the city.
Seasonal Extremes of 24 hours Rainfall
- Winter: 54.9 mm, January 9, 1989.
- Pre monsoon: 208.4 mm, May 28, 1989.
- Monsoon: 395.5 mm, July 21, 1988
- Post Monsoon: 345.2 mm, October 5, 1968
See Also
References
- ↑ "Climate data for Siliguri". www.weatheronline.in. Retrieved 10 November 2020.
- ↑ "Regional Meteorological Department, Kolkata". Retrieved 7 December 2020.
- ↑ "Average UV Index for Siliguri". Retrieved 7 December 2020.
- ↑ "Extremes of Temperature & Rainfall for Indian Stations (Up to 2012)" (PDF). India Meteorological Department. December 2016. p. M229. Archived from the original (PDF) on 21 October 2020. Retrieved 21 October 2020.
- ↑ "Climate for Siliguri city". Retrieved 3 December 2020.
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