Port Blair climate
Port Blair (Andaman and Nicobar, India) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 28 °C82 °F, and about 2,567 mm101 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Port Blair climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2781 | 2679 | 2780 | 411.6 |
| Feb | 2883 | 2679 | 2781 | 120.5 |
| Mar | 2984 | 2781 | 2883 | 401.6 |
| Apr | 3086 | 2983 | 2985 | 722.8 |
| May | 2985 | 2984 | 2984 | 35914 |
| Jun | 2984 | 2882 | 2883 | 38415 |
| Jul | 2883 | 2882 | 2882 | 37015 |
| Aug | 2883 | 2882 | 2882 | 34414 |
| Sep | 2882 | 2781 | 2882 | 41016 |
| Oct | 2883 | 2781 | 2882 | 2319.1 |
| Nov | 2883 | 2781 | 2882 | 1907.5 |
| Dec | 2882 | 2780 | 2781 | 1134.5 |
| Year | 3086 | 2679 | 2882 | 2,567101 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 75% | 52% | 5.1 | 11:30 |
| Feb | 72% | 39% | 5.9 | 11:45 |
| Mar | 71% | 42% | 6.3 | 12:02 |
| Apr | 72% | 52% | 6.3 | 12:23 |
| May | 79% | 85% | 4.7 | 12:39 |
| Jun | 83% | 92% | 4.3 | 12:48 |
| Jul | 84% | 92% | 4.4 | 12:45 |
| Aug | 84% | 91% | 4.5 | 12:30 |
| Sep | 83% | 88% | 4.5 | 12:10 |
| Oct | 81% | 76% | 5.0 | 11:51 |
| Nov | 79% | 68% | 4.7 | 11:34 |
| Dec | 77% | 62% | 4.6 | 11:27 |
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 Port Blair is like
The warmest month is April, with an average high of 30 °C86 °F and a low of 29 °C83 °F. The coldest is January, when highs average 27 °C81 °F and lows 26 °C79 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.4 °C4.3 °F.
It is very wet, receiving about 2,567 mm101 in of precipitation per year. The wettest three-month stretch is July–September, which brings 44% of the annual total. Months with less than 20 mm0.8 in on average: February. The wettest month is September (410 mm16 in), the driest is February (12 mm0.5 in).
Relative humidity ranges from 71% in March to 84% in July. The clearest skies (lowest average cloud amount, 39%) are typical of February. Average wind speed near the ground ranges from 9 km/h (6 mph) in April to 23 km/h (14 mph) in August. Daylight lasts from about 11.4 hours in December to 12.8 hours in June.
Best time to visit Port Blair
Based on these averages, the most comfortable months for sightseeing and outdoor activities are January–March. Average highs then reach 27 °C81 °F to 29 °C84 °F. Precipitation is 12 mm0.5 in to 41 mm1.6 in per month.
The most challenging month is September, which is very wet (410 mm16 in) and humid (83% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means 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 Port Blair
- Wetter months (May–October) — highs 2882 to 29 °C85 °F, lows 2781 to 29 °C84 °F, about 350 mm14 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (November–April) — highs 2781 to 30 °C86 °F, lows 2679 to 29 °C83 °F, about 78 mm3.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Port Blair compares
World Climates covers 382 places in India. By annual mean temperature, Port Blair is the 26th warmest of them. By annual precipitation, it is the 8th wettest. See all of them on the India climate page.
Some places in other countries have a very similar pattern of temperature and rainfall (with seasons shifted for the other hemisphere). The closest matches are Phu Quoc (Vietnam, Am), Cirebon (Indonesia, Am) and Jepara (Indonesia, Am).
Nearby places
- Climate in Pathein 607 km · 28 °C83 °F · 533 mm21 in
- Climate in Myeik 642 km · 27 °C81 °F · 1,338 mm53 in
- Climate in Dawei 648 km · 27 °C81 °F · 1,748 mm69 in
- Climate in Kyauktan 674 km · 28 °C82 °F · 1,790 mm70 in
- Climate in Yangon 679 km · 28 °C82 °F · 1,235 mm49 in
- Climate in Hinthada 726 km · 29 °C84 °F · 594 mm23 in
- Climate in Banda Aceh 738 km · 28 °C82 °F · 1,914 mm75 in
- Climate in Bago 748 km · 28 °C83 °F · 1,010 mm40 in
Frequently asked questions
What is the warmest month in Port Blair?
April is the warmest month in Port Blair. Its average high is 30 °C (86 °F) and its average low is 29 °C (83 °F).
What is the coldest month in Port Blair?
January is the coldest month. Its average high is 27 °C (81 °F) and its average low is 26 °C (79 °F).
When does it rain the most in Port Blair?
September is the wettest month with about 410 mm (16.1 in) of precipitation. February is the driest with about 12 mm (0.5 in).
What is the best time to visit Port Blair?
Judging by long-term averages, the most comfortable months are January–March.
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. The gaps are largest 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.