Geography and Climate
Port Blair has a tropical monsoon climate, with little variation in average temperature and large amounts of precipitation throughout the year. All months except January, February and March receive substantial rainfall.
| Climate data for Port Blair | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average high °C (°F) | 29.2 (84.6) |
30.1 (86.2) |
31.1 (88.0) |
32.2 (90.0) |
31.0 (87.8) |
29.5 (85.1) |
29.2 (84.6) |
29.1 (84.4) |
29.2 (84.6) |
29.6 (85.3) |
29.4 (84.9) |
29.1 (84.4) |
29.89 (85.81) |
| Daily mean °C (°F) | 25.2 (77.4) |
25.6 (78.1) |
26.5 (79.7) |
27.9 (82.2) |
27.2 (81.0) |
26.3 (79.3) |
26.1 (79.0) |
26.0 (78.8) |
25.8 (78.4) |
25.9 (78.6) |
25.9 (78.6) |
25.7 (78.3) |
26.18 (79.12) |
| Average low °C (°F) | 21.3 (70.3) |
21.0 (69.8) |
21.8 (71.2) |
23.4 (74.1) |
23.3 (73.9) |
23.1 (73.6) |
23.0 (73.4) |
22.9 (73.2) |
22.4 (72.3) |
22.2 (72.0) |
22.3 (72.1) |
22.3 (72.1) |
22.42 (72.35) |
| Precipitation mm (inches) | 31 (1.22) |
21 (0.83) |
9 (0.35) |
70 (2.76) |
346 (13.62) |
456 (17.95) |
400 (15.75) |
425 (16.73) |
403 (15.87) |
295 (11.61) |
254 (10) |
157 (6.18) |
2,867 (112.87) |
| Avg. precipitation days (≥ 1 mm) | 2.8 | 1.5 | 1.4 | 4.1 | 18.5 | 23.0 | 22.2 | 23.4 | 20.2 | 17.8 | 15.3 | 6.1 | 156.3 |
| Mean monthly sunshine hours | 266.6 | 265.6 | 263.5 | 243.0 | 155.0 | 87.0 | 111.6 | 102.3 | 126.0 | 167.4 | 174.0 | 238.7 | 2,200.7 |
| Source: Hong Kong Observatory | |||||||||||||
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