| Climate data for Kolkata (Alipore) 1991–2020, extremes 1901–present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 32.8 (91.0) |
38.4 (101.1) |
41.1 (106.0) |
43.3 (109.9) |
43.7 (110.7) |
43.9 (111.0) |
39.9 (103.8) |
38.4 (101.1) |
38.9 (102.0) |
39.0 (102.2) |
34.9 (94.8) |
32.5 (90.5) |
43.9 (111.0) |
| Mean maximum °C (°F) | 29.8 (85.6) |
33.9 (93.0) |
37.5 (99.5) |
38.8 (101.8) |
39.0 (102.2) |
37.8 (100.0) |
36.0 (96.8) |
35.3 (95.5) |
35.5 (95.9) |
35.3 (95.5) |
33.1 (91.6) |
30.0 (86.0) |
39.8 (103.6) |
| Mean daily maximum °C (°F) | 25.5 (77.9) |
29.4 (84.9) |
33.7 (92.7) |
35.4 (95.7) |
35.5 (95.9) |
34.1 (93.4) |
32.5 (90.5) |
32.3 (90.1) |
32.6 (90.7) |
32.3 (90.1) |
30.2 (86.4) |
26.7 (80.1) |
31.7 (89.1) |
| Daily mean °C (°F) | 19.9 (67.8) |
23.8 (74.8) |
28.2 (82.8) |
30.6 (87.1) |
31.2 (88.2) |
30.6 (87.1) |
29.5 (85.1) |
29.4 (84.9) |
29.4 (84.9) |
28.3 (82.9) |
25.1 (77.2) |
21.1 (70.0) |
27.3 (81.1) |
| Mean daily minimum °C (°F) | 14.3 (57.7) |
18.1 (64.6) |
22.9 (73.2) |
25.7 (78.3) |
26.8 (80.2) |
27.1 (80.8) |
26.7 (80.1) |
26.6 (79.9) |
26.3 (79.3) |
24.4 (75.9) |
20.1 (68.2) |
15.5 (59.9) |
22.9 (73.2) |
| Mean minimum °C (°F) | 10.9 (51.6) |
12.4 (54.3) |
18.2 (64.8) |
21.1 (70.0) |
21.8 (71.2) |
23.9 (75.0) |
24.3 (75.7) |
24.6 (76.3) |
23.9 (75.0) |
20.9 (69.6) |
16.9 (62.4) |
11.9 (53.4) |
10.0 (50.0) |
| Record low °C (°F) | 6.7 (44.1) |
7.2 (45.0) |
10.0 (50.0) |
16.1 (61.0) |
17.9 (64.2) |
20.4 (68.7) |
20.6 (69.1) |
22.6 (72.7) |
20.6 (69.1) |
17.2 (63.0) |
10.6 (51.1) |
7.2 (45.0) |
6.7 (44.1) |
| Average rainfall mm (inches) | 15.4 (0.61) |
24.6 (0.97) |
36.8 (1.45) |
55.0 (2.17) |
118.5 (4.67) |
276.7 (10.89) |
371.6 (14.63) |
372.1 (14.65) |
325.0 (12.80) |
179.6 (7.07) |
32.6 (1.28) |
5.6 (0.22) |
1,813.3 (71.39) |
| Average rainy days | 1.1 | 1.5 | 2.1 | 3.2 | 6.2 | 12.6 | 17.5 | 16.8 | 13.6 | 7.4 | 1.4 | 0.7 | 84.2 |
| Average relative humidity (%) (at 17:30 IST) | 62 | 55 | 51 | 61 | 68 | 77 | 82 | 83 | 82 | 76 | 68 | 65 | 69 |
| Mean monthly sunshine hours | 213.9 | 211.9 | 229.4 | 240.0 | 232.5 | 135.0 | 105.4 | 117.8 | 126.0 | 201.5 | 216.0 | 204.6 | 2,234 |
| Mean daily sunshine hours | 6.9 | 7.5 | 7.4 | 8.0 | 7.5 | 4.5 | 3.4 | 3.8 | 4.2 | 6.5 | 7.2 | 6.6 | 6.1 |
| Average ultraviolet index | 7 | 9 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 9 | 7 | 6 | 10 |
| Source 1: India Meteorological Department (sun 1971–2000)[1][2][3][4] Weather Atlas[5] | |||||||||||||
| Source 2: Tokyo Climate Center (mean temperatures 1991–2020)[6] [7] | |||||||||||||
| Climate data for Kolkata (Dumdum Airport) 1991–2020, extremes 1939–2020 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 32.5 (90.5) |
37.3 (99.1) |
40.6 (105.1) |
42.8 (109.0) |
43.1 (109.6) |
43.7 (110.7) |
39.2 (102.6) |
37.7 (99.9) |
37.5 (99.5) |
36.8 (98.2) |
36.0 (96.8) |
33.0 (91.4) |
43.7 (110.7) |
| Mean daily maximum °C (°F) | 25.3 (77.5) |
29.2 (84.6) |
33.6 (92.5) |
35.9 (96.6) |
36.1 (97.0) |
34.8 (94.6) |
33.2 (91.8) |
33.0 (91.4) |
33.3 (91.9) |
32.5 (90.5) |
30.1 (86.2) |
26.6 (79.9) |
32.0 (89.6) |
| Daily mean °C (°F) | 18.8 (65.8) |
22.9 (73.2) |
27.4 (81.3) |
30.1 (86.2) |
30.6 (87.1) |
30.3 (86.5) |
29.5 (85.1) |
29.3 (84.7) |
29.3 (84.7) |
27.9 (82.2) |
24.3 (75.7) |
20.1 (68.2) |
26.7 (80.1) |
| Mean daily minimum °C (°F) | 12.9 (55.2) |
16.9 (62.4) |
21.9 (71.4) |
25.2 (77.4) |
26.2 (79.2) |
26.8 (80.2) |
26.6 (79.9) |
26.5 (79.7) |
26.2 (79.2) |
24.1 (75.4) |
19.3 (66.7) |
14.3 (57.7) |
22.2 (72.0) |
| Record low °C (°F) | 5.0 (41.0) |
6.1 (43.0) |
12.1 (53.8) |
16.6 (61.9) |
17.6 (63.7) |
19.2 (66.6) |
20.1 (68.2) |
21.1 (70.0) |
21.7 (71.1) |
15.7 (60.3) |
11.7 (53.1) |
6.1 (43.0) |
5.0 (41.0) |
| Average rainfall mm (inches) | 15.8 (0.62) |
20.2 (0.80) |
31.9 (1.26) |
53.4 (2.10) |
140.5 (5.53) |
247.5 (9.74) |
366.5 (14.43) |
355.4 (13.99) |
282.1 (11.11) |
170.2 (6.70) |
21.3 (0.84) |
6.8 (0.27) |
1,711.5 (67.38) |
| Average rainy days | 1.1 | 1.4 | 2.3 | 3.5 | 6.6 | 12.4 | 17.6 | 17.1 | 13.0 | 7.1 | 1.1 | 0.7 | 83.8 |
| Average relative humidity (%) (at 08:30 IST) | 61 | 53 | 49 | 58 | 66 | 76 | 81 | 82 | 81 | 75 | 67 | 66 | 68 |
| Source 1: India Meteorological Department[7] | |||||||||||||
| Source 2: Tokyo Climate Center (mean temperatures 1991–2020)[8] | |||||||||||||
References
- ^ "Station: Calcutta (Alipur) Climatological Table 1981–2010" (PDF). Climatological Normals 1981–2010. India Meteorological Department. January 2015. pp. 161–162. Archived from the original (PDF) on 5 February 2020. Retrieved 2 March 2020.
- ^ "Extremes of Temperature & Rainfall for Indian Stations (Up to 2012)" (PDF). India Meteorological Department. December 2016. p. M237. Archived from the original (PDF) on 5 February 2020. Retrieved 2 March 2020.
- ^ "Table 3 Monthly mean duration of Sun Shine (hours) at different locations in India" (PDF). Daily Normals of Global & Diffuse Radiation (1971–2000). India Meteorological Department. December 2016. p. M-3. Archived from the original (PDF) on 5 February 2020. Retrieved 2 March 2020.
- ^ "Kolkata (Alipore) (42807)". India Meteorological Department. Retrieved 10 September 2022.
- ^ "Climate and monthly weather forecast Kolkata, India". Weather Atlas. Retrieved 17 June 2022.
- ^ "Normals Data: Kolkata/Alipore - India Latitude: 22.53°N Longitude: 88.33°E Height: 6 (m)". Japan Meteorological Agency. Retrieved 2 March 2020.
- ^ a b "Climatological Tables 1991-2020" (PDF). India Meteorological Department. p. 21. Archived from the original (PDF) on 1 January 2023. Retrieved 1 January 2023.
- ^ "Normals Data: Kolkata/Dum Dum - India Latitude: 22.65°N Longitude: 88.45°E Height: 6 (m)". Japan Meteorological Agency. Retrieved 2 March 2020.