Climate averages 1991–2020
Port Blair weather
in December.
A warm, wet month: the 11th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Port Blair: daytime highs average 27.5°C and nights cool to about 25.8°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 93 mm of rain on roughly 9 days, which makes December a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 27 min on an average December day.
The nearest other city in this atlas is Pathein (607 km away). In December its highs average 29.5°C, 2.0°C warmer than Port Blair, with 6.7 mm of rain.
Among the 692 cities listed in India, Port Blair ranks joint 235th of 692 for the warmest December highs and joint 660th of 692 for the driest December (rainfall, lowest first). The mean December high of those 692 cities is 25.6°C; Port Blair is 1.9°C warmer than that mean.
From December to January, average highs fall by 0.2°C to 27.3°C, and monthly rainfall falls from 93 mm to 33 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Port Blair climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C25.3°C | 25.3°C | 33 | 4.9 | 11.512 h |
| February | 27.9°C25.3°C | 25.3°C | 10 | 2.0 | 11.812 h |
| March | 28.8°C25.8°C | 25.8°C | 32 | 4.0 | 12.112 h |
| April | 29.8°C26.9°C | 26.9°C | 70 | 8.5 | 12.412 h |
| May | 29.1°C26.8°C | 26.8°C | 271 | 24.5 | 12.713 h |
| June | 28.4°C26.6°C | 26.6°C | 327 | 25.7 | 12.813 h |
| July | 28.1°C26.2°C | 26.2°C | 295 | 27.9 | 12.713 h |
| August | 27.9°C26.1°C | 26.1°C | 296 | 27.5 | 12.513 h |
| September | 27.7°C25.8°C | 25.8°C | 323 | 27.3 | 12.212 h |
| October | 27.7°C25.7°C | 25.7°C | 265 | 24.9 | 11.912 h |
| November | 27.8°C26.0°C | 26.0°C | 180 | 16.4 | 11.612 h |
| December, selected | 27.5°C25.8°C | 25.8°C | 93 | 8.7 | 11.511 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Pathein in DecemberMyanmar · 607 kmHigh 29.5°C · Low 19.6°C · 6.7 mm rain
- Dawbon in DecemberMyanmar · 621 kmHigh 30.1°C · Low 19.7°C · 5.4 mm rain
- Myeik in DecemberMyanmar · 642 kmHigh 31.1°C · Low 22.1°C · 25 mm rain
- Dawei in DecemberMyanmar · 648 kmHigh 30.5°C · Low 20.6°C · 9.8 mm rain
- Kyauktan in DecemberMyanmar · 674 kmHigh 29.3°C · Low 20.9°C · 4.7 mm rain
- Set Ka Lay in DecemberMyanmar · 678 kmHigh 30.2°C · Low 19.7°C · 5.0 mm rain
- Hlaingthaya in DecemberMyanmar · 678 kmHigh 30.2°C · Low 19.8°C · 5.0 mm rain
- Yangon in DecemberMyanmar · 679 kmHigh 30.0°C · Low 19.6°C · 4.7 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Port Blair) is explained once on the Port Blair year overview and on the Sources, method and limits page.