Roseau weather in December
December in Roseau: hot, a little rain, with clean air — fine if you can take sticky heat.
Updated September 2026 · climate normals from ERA5 reanalysis
#6 of 12 months in Roseau · #233 of 1413 destinations to visit in December · comfort 87/100 (tier A)
- Days
- 31°C
- Nights
- 23°C
- Wet days
- 16
- Sun
- 10.1 h
- Humidity
- 79%
- Daylight
- 11 h
Traveller notes on Roseau in December
Other months in Roseau
Dominica's forum is upfront that October sits in peak hurricane season, so the odds of a tropical wave or storm affecting a trip are real, though a direct hit remains the exception rather than the rule. As a lush rainforest island, it's genuinely going to rain somewhere on Dominica most days, but posters describe showers as typically brief and scattered, heavier up in the mountains than down in Roseau itself, with a lot of the rain falling overnight. October through December is actually recommended by some specifically for the World Creole Festival, drawing visitors despite the storm risk.
Forum posters consistently describe Dominica, 'the nature island,' as the most rainforested of the Eastern Caribbean islands - genuinely rainy somewhere on the island most days, which posters point to as exactly why it stays so lush and green with so many rivers. Posters are equally consistent that showers here tend to be brief, usually followed quickly by sunshine again, and one visitor's multi-week April-May stay in Roseau itself saw no rain at all, even as areas just a few miles inland got frequent heavy downpours. Posters generally name the December-through-April stretch as the main dry season with the calmest seas, and specifically recommend April for hiking, noting that conditions only get hotter and wetter as hurricane season approaches in the summer months.
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Roseau climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Roseau in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Roseau's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherRoseau's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Roseau in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Sperm whales off the west coast
1 Nov – 31 Mar · usuallyWhale seasonFamily groups of sperm whales live in the deep water a few kilometres off Roseau all year, and the calm winter months are when the boats can find them. Dominica has been putting protections around them.
- Season
Dry season
15 Dec – 15 May · usuallyThe one stretch when the Boiling Lake track and the Waitukubuli segments above Roseau are not a mudslide, and the rivers drop enough to cross. Even then the interior makes its own weather by noon.
Nearby, and something's on
Within 300 km of Roseau — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Roseau?
Roseau in December — FAQ
- Is December a good time to visit Roseau?
- December in Roseau: hot, a little rain, with clean air — fine if you can take sticky heat. It ranks #6 of 12 months for Roseau on SeasonMap's comfort score (87/100).
- What is the weather like in Roseau in December?
- In December, Roseau averages a daily high of 30.8°C and a low of 22.6°C, with about 44.6 mm of rain over roughly 15.8 rainy days.
- What is the air quality in Roseau in December?
- Roseau has a mean US Air Quality Index of about 39 in December.
Within 300 km: Castries' ARC finish at Rodney Bay on 25 Nov – 22 Dec, and Fort-de-France's Careme, the dry season around 1 Dec – 30 Apr.