Karnaphuli climate
Karnaphuli (Bangladesh) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 26 °C79 °F, and about 2,540 mm100 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Karnaphuli climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2679 | 1356 | 2067 | 80.3 |
| Feb | 3086 | 1660 | 2373 | 130.5 |
| Mar | 3493 | 2067 | 2780 | 321.3 |
| Apr | 3595 | 2373 | 2984 | 1044.1 |
| May | 3492 | 2576 | 2984 | 26710 |
| Jun | 3290 | 2577 | 2983 | 49119 |
| Jul | 3188 | 2577 | 2883 | 64425 |
| Aug | 3188 | 2577 | 2883 | 43017 |
| Sep | 3188 | 2576 | 2882 | 31012 |
| Oct | 3087 | 2374 | 2780 | 1897.4 |
| Nov | 2883 | 1967 | 2475 | 431.7 |
| Dec | 2679 | 1559 | 2169 | 90.4 |
| Year | 3595 | 1356 | 2679 | 2,540100 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 62% | 28% | 4.5 | 10:53 |
| Feb | 54% | 26% | 5.3 | 11:22 |
| Mar | 53% | 36% | 5.8 | 11:58 |
| Apr | 64% | 49% | 5.8 | 12:39 |
| May | 76% | 68% | 5.3 | 13:13 |
| Jun | 85% | 88% | 4.6 | 13:31 |
| Jul | 88% | 93% | 4.4 | 13:24 |
| Aug | 88% | 92% | 4.6 | 12:55 |
| Sep | 88% | 85% | 4.7 | 12:15 |
| Oct | 85% | 60% | 4.7 | 11:35 |
| Nov | 78% | 35% | 4.6 | 11:01 |
| Dec | 72% | 33% | 4.2 | 10:45 |
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 Karnaphuli is like
The warmest month is May, with an average high of 34 °C92 °F and a low of 25 °C76 °F. The coldest is January, when highs average 26 °C79 °F and lows 13 °C56 °F. There is a clear seasonal cycle, with 9.3 °C16.8 °F between the average temperature of the warmest and the coolest month.
It is very wet, receiving about 2,540 mm100 in of precipitation per year. The wettest three-month stretch is June–August, which brings 62% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is July (644 mm25 in), the driest is January (8 mm0.3 in).
Relative humidity ranges from 53% in March to 88% in July. The clearest skies (lowest average cloud amount, 26%) are typical of February. Average wind speed near the ground ranges from 1 km/h (1 mph) in September to 2 km/h (1 mph) in January. Daylight lasts from about 10.7 hours in December to 13.5 hours in June.
Best time to visit Karnaphuli
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–February: average highs of 26 °C79 °F to 30 °C86 °F with 8 mm0.3 in to 43 mm1.7 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 31 °C88 °F, very wet (644 mm25 in) and humid (88% relative humidity).
Comfort score: months are ranked by how close they come to 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 Karnaphuli
- Wetter months (May–September) — highs 3188 to 34 °C92 °F, lows around 25 °C76 °F, about 428 mm17 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (October–April) — highs 2679 to 35 °C95 °F, lows 1356 to 23 °C74 °F, about 57 mm2.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Karnaphuli compares
Compared with Chattogram, about 57 km to the southwest, Karnaphuli is on average 0.3 °C0.6 °F warmer and receives 17% less precipitation (2,540 mm100 in vs 3,061 mm121 in). The difference is largest in January (1.1 °C2 °F warmer).
Of the 35 places in Bangladesh covered by World Climates, Karnaphuli is the 2nd warmest by annual mean temperature and the 7th wettest by annual precipitation. See all of them on the Bangladesh climate page.
Places in other countries with the most similar temperature and rainfall pattern: Haldia (India, Aw), Agartala (India, Cwa) and Balasore (India, Aw).
The same NASA POWER grid cell also contains Rangamati (pop. 106,069). Their long-term averages in this dataset are essentially the same as for Karnaphuli, so they do not have separate pages.
Nearby places
- Chattogram 57 km · 26 °C78 °F · 3,061 mm121 in
- Maijdi 118 km · 25 °C77 °F · 2,802 mm110 in
- Aizawl 126 km · 19 °C66 °F · 2,143 mm84 in
- Comilla 137 km · 25 °C77 °F · 2,395 mm94 in
- Coxs Bazar 141 km · 26 °C79 °F · 5,320 mm209 in
- Agartala 160 km · 25 °C78 °F · 2,295 mm90 in
- Chandpur 172 km · 25 °C78 °F · 2,468 mm97 in
- Barishal 191 km · 26 °C78 °F · 2,857 mm112 in
Frequently asked questions
What is the warmest month in Karnaphuli?
May is the warmest month in Karnaphuli, with an average high of 34 °C (92 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Karnaphuli?
January is the coldest month, with an average high of 26 °C (79 °F) and an average low of 13 °C (56 °F).
When does it rain the most in Karnaphuli?
July is the wettest month with about 644 mm (25.4 in) of precipitation; January is the driest with about 8 mm (0.3 in).
What is the best time to visit Karnaphuli?
Judging by long-term averages, the most comfortable months are November–February.
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 — most of all 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.
The grid cell’s average elevation is 268 m, while Karnaphuli lies at about 46 m. Temperatures on this page were therefore adjusted by +1.4 °C2.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.