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Monthly climate in Roseau, Dominica

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Roseau features a tropical rainforest climate (Af).Temperatures typically range between 25 °C (77 °F) and 27 °C (81 °F) through the year, but rarely can drop to 22 °C (72 °F) or can rise to as high as 29 °C (84 °F).The average annual precipitation amounts to about 829 mm (32.6 inches) and receives 192 rainy days on the 1 mm (0.04 inches) threshold annually.Roseau enjoys an average of 3923 hours of sunshine throughout the year, and daylight varies from 11 hours 13 minutes to 13 hours 0 minutes per day.

Monthly average temperatures in Roseau, Dominica §

The warmest months in Roseau are August, September and October, with daily mean temperatures ranging from 27 to 27 °C (81 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, Roseau experiences 320 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 Roseau, Dominica.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 27°C
(80°F)		 26°C
(80°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(82°F)		 28°C
(82°F)
Mean maximum 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)
Average high 26°C
(78°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(80°F)
Daily mean 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(80°F)		 26°C
(79°F)
Average low 25°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 27°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)
Mean minimum 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(75°F)
Minimum 23°C
(73°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(76°F)		 24°C
(75°F)

Compare climate in Roseau with other places

Compare temperature, precipitation, sunshine, UV index in Roseau, Dominica with other places around the world.

Monthly average precipitation in Roseau, Dominica §

Roseau usually has the most precipitation in August, September and October, with an average of 19 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Roseau are March, April and May. On average, 34 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Roseau, Dominica.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) 36 (1.4) 36 (1.4) 34 (1.3) 32 (1.3) 35 (1.4) 68 (2.7) 97 (3.8) 109 (4.3) 114 (4.5) 117 (4.6) 97 (3.8) 53 (2.1)
Average precipitation days (≥ 1 mm) 13 13 14 12 10 14 20 21 17 20 20 18

Monthly sunshine hours in Roseau, Dominica §

The sunniest months in Roseau are March, May and July, when the sun shines an average of 11 hours 22 minutes a day.Least sunny months in Roseau: January, February and November receive an average of 9 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Roseau, Dominica.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 266 304 347 339 357 327 353 347 318 319 311 329
Mean daily daylight hours 11h 19m 11h 38m 12h 2m 12h 28m 12h 50m 13h 0m 12h 55m 12h 36m 12h 11m 11h 45m 11h 23m 11h 13m

Solar UV radiation in Roseau, Dominica §

Roseau experiences the highest level of ultraviolet (UV) radiation in April, May and July, when the maximum UV index can reach values of 14 - 14, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Roseau UV Index data.

Average daily maximum UV levels by month for Roseau, Dominica.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) 10 11 13 14 14 13 14 13 13 12 10 9