nomadseason

Monthly climate in Sylhet, Bangladesh

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sylhet features a tropical monsoon climate (Am).Temperatures typically range between 17 °C (63 °F) and 28 °C (84 °F) through the year, but rarely can drop to 6 °C (44 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 4406 mm (173.5 inches) and receives 195 rainy days on the 1 mm (0.04 inches) threshold annually.Sylhet enjoys an average of 3361 hours of sunshine throughout the year, and daylight varies from 10 hours 36 minutes to 13 hours 38 minutes per day.

Monthly average temperatures in Sylhet, Bangladesh §

The warmest months in Sylhet are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 17 to 19 °C (63 - 67 °F) throughout the day. On average each year, Sylhet experiences 279 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sylhet, Bangladesh.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 29°C
(84°F)		 30°C
(86°F)		 34°C
(93°F)		 35°C
(96°F)		 36°C
(98°F)		 35°C
(96°F)		 37°C
(99°F)		 37°C
(99°F)		 37°C
(98°F)		 36°C
(98°F)		 32°C
(89°F)		 29°C
(85°F)
Mean maximum 27°C
(81°F)		 29°C
(85°F)		 33°C
(91°F)		 34°C
(93°F)		 34°C
(94°F)		 34°C
(94°F)		 35°C
(95°F)		 36°C
(97°F)		 36°C
(96°F)		 34°C
(94°F)		 31°C
(89°F)		 28°C
(83°F)
Average high 24°C
(75°F)		 26°C
(79°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(88°F)		 31°C
(88°F)		 32°C
(90°F)		 32°C
(89°F)		 31°C
(88°F)		 29°C
(84°F)		 25°C
(77°F)
Daily mean 17°C
(63°F)		 19°C
(67°F)		 23°C
(74°F)		 25°C
(78°F)		 27°C
(80°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(84°F)		 28°C
(83°F)		 27°C
(80°F)		 23°C
(73°F)		 19°C
(66°F)
Average low 12°C
(54°F)		 14°C
(57°F)		 18°C
(65°F)		 21°C
(70°F)		 23°C
(74°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 24°C
(75°F)		 18°C
(65°F)		 14°C
(57°F)
Mean minimum 9°C
(48°F)		 10°C
(51°F)		 14°C
(58°F)		 18°C
(64°F)		 21°C
(70°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 24°C
(76°F)		 20°C
(69°F)		 14°C
(58°F)		 11°C
(52°F)
Minimum 6°C
(44°F)		 9°C
(49°F)		 12°C
(54°F)		 17°C
(63°F)		 20°C
(68°F)		 23°C
(73°F)		 23°C
(73°F)		 25°C
(76°F)		 24°C
(75°F)		 18°C
(64°F)		 14°C
(57°F)		 10°C
(50°F)

Compare climate in Sylhet with other places

Compare temperature, precipitation, sunshine, UV index in Sylhet, Bangladesh with other places around the world.

Monthly average precipitation in Sylhet, Bangladesh §

Sylhet usually has the most precipitation in June, July and August, with an average of 29 rainy days and 820 mm (32.3 inches) of precipitation per month.The driest months in Sylhet are January, February and November. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sylhet, Bangladesh.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 6 (0.2) 28 (1.1) 117 (4.6) 503 (19.8) 520 (20.5) 816 (32.1) 895 (35.2) 749 (29.5) 466 (18.3) 247 (9.7) 20 (0.8) 40 (1.6)
Average precipitation days (≥ 1 mm) 1 3 9 19 27 29 30 30 26 16 3 2

Monthly sunshine hours in Sylhet, Bangladesh §

The sunniest months in Sylhet are March, April and May, when the sun shines an average of 10 hours 20 minutes a day.Least sunny months in Sylhet: January, July and August receive an average of 7 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sylhet, Bangladesh.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 244 287 332 307 310 253 222 246 261 300 296 296
Mean daily daylight hours 10h 45m 11h 18m 12h 0m 12h 44m 13h 20m 13h 38m 13h 29m 12h 57m 12h 16m 11h 32m 10h 55m 10h 36m

Solar UV radiation in Sylhet, Bangladesh §

Sylhet experiences the highest level of ultraviolet (UV) radiation in July, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.January, February and December are in the High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Sylhet UV Index data.

Average daily maximum UV levels by month for Sylhet, Bangladesh.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 6 7 9 10 13 13 14 13 13 10 8 6