Dominica

Dominica Weather & Climate: Monthly Averages

Monthly climate averages for Dominica, temperatures, rainfall and the best time to visit.

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Roseau Portsmouth Calibishie Marigot

Climate overview of Dominica

Dominica is one of the few countries in the world that truly has a tropical rainforest climate This climate makes Dominica an all-year destination; the temperature remains constant almost year round. In winter months the temperature averages between 21°C (70°F) and 28°C (82°F) and in summer it ranges from 23°C (73°F) to 30°C (86°F). The dry season is from February to the end of May and the rainy season lasts from June to October. The spring months, from February to April, are the driest. The heaviest rain falls during late summer and fall, this is from August to December.

The average yearly rainfall ranges from about 1900 mm (75 in) at the coast to 5000 mm (197 in) inland. Hurricanes coming in from the Atlantic Ocean can be expected during summer months, usually between June and October. The peak of hurricane season is late August to early September.

During the drier months there is still a regular shower, but the showers are less intense and often last shorter. This season is the best time to travel to Dominica. If you want to be sure you have sunny weather, it is best to book your holiday in February, March or April.

Explore Dominica by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Popular cities by month

Compare cities per month. Toggle cities on/off.

Roseau Portsmouth Calibishie Marigot Pont Cassé Castle Bruce

Day temperature (°C)

Monthly rainfall (mm)

Monthly sunshine (hours)

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Climate map

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)

0° 32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.


Roseau	27°C (81°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	1053 mm (41 in)	2,630 hours
Portsmouth	27°C (81°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	973 mm (38 in)	2,630 hours
Calibishie	27°C (81°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	1100 mm (43 in)	2,630 hours
Marigot	27°C (81°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	1152 mm (45 in)	2,630 hours
Pont Cassé	27°C (81°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	1116 mm (44 in)	2,630 hours
Castle Bruce	26°C (79°F) – 29°C (84°F)	24°C (75°F) – 26°C (79°F)	1220 mm (48 in)	2,630 hours

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FAQ

What is the best time to visit Dominica?

The warmest month in Portsmouth is September, with daytime highs of 29°C (84°F). Douglas-Charles Airport is the sunniest destination, with 245 hours of sunshine in April. Dominica has a distinct dry season from February to March. Explore Dominica weather by month for a detailed breakdown.

What temperatures can I expect in Dominica?

Portsmouth is the warmest destination, reaching 29°C (84°F) in September with nights around 26°C (79°F). Castle Bruce is the coolest, with February daytime highs of just 26°C (79°F) and nights dropping to 24°C (75°F). Temperatures are relatively stable throughout the year. See the city comparison for a full overview.

How much rain does Dominica get?

Rainfall varies across Dominica. Castle Bruce is the wettest, receiving 1220 mm (48 in) per year, with October the wettest month at 162 mm (6.4 in). Portsmouth is the driest at 973 mm (38 in) per year. Use the climate map to explore rainfall patterns across regions.

How sunny is Dominica?

Douglas-Charles Airport is the sunniest destination in Dominica, enjoying 2,630 hours of sunshine per year, with April the brightest month at 245 hours. Overall, Dominica enjoys abundant sunshine year-round. Compare sunshine across cities in the charts above.

What is the climate like across Dominica?

Roseau has warm summers reaching 29°C (84°F) in September and warm winters dropping to 27°C (81°F), with 2,630 hours of sunshine and 1053 mm (41 in) of rain per year. Portsmouth has warm summers reaching 29°C (84°F) in September and warm winters dropping to 27°C (81°F), with 2,630 hours of sunshine and 973 mm (38 in) of rain per year. Calibishie has warm summers reaching 29°C (84°F) in September and warm winters dropping to 27°C (81°F), with 2,630 hours of sunshine and 1100 mm (43 in) of rain per year. Explore the climate charts and comparison table for more cities.