Roseau weather in March
March in Roseau: hot, dry, with clean air — fine if you can take sticky heat.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Roseau · #167 of 1413 destinations to visit in March · comfort 90/100 (tier S)
- Days
- 31°C
- Nights
- 22°C
- Wet days
- 11
- Sun
- 11.2 h
- Humidity
- 78%
- Daylight
- 12 h

Traveller notes on Roseau in March
Notes from nearby Fort-de-France (84 km away)
Roseau doesn't have its own notes for March yet — these are about Fort-de-France, close enough to share the season.
Martinique's forum describes year-round weather as plenty of sunshine with occasional showers, roughly 25-31°C, and Fort-de-France on the drier southern half of the island compared to the wetter north. Regulars point to the dry-season months around March as generally reliable, with rain a real possibility on any given day but rarely enough to derail a trip.
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.
Add your own note from Roseau's card on the map.
Roseau climate normals — March
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Roseau in March
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.
BusyMas Domnik, school holidays in 2 of the markets that fill it(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 March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Mas Domnik
5 Jan – 10 Mar · usuallyCarnivalCrowdedDominica calls its carnival the Real Mas and keeps it closer to calypso and sensay costume than to feathers. The season opens in early January and ends with two days on the streets of Roseau before Ash Wednesday. Source ↗
- 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 March — FAQ
- Is March a good time to visit Roseau?
- March in Roseau: hot, dry, with clean air — fine if you can take sticky heat. It ranks #1 of 12 months for Roseau on SeasonMap's comfort score (90/100).
- What is the weather like in Roseau in March?
- In March, Roseau averages a daily high of 30.5°C and a low of 22.2°C, with about 26 mm of rain over roughly 10.5 rainy days.
- What is the air quality in Roseau in March?
- Roseau has a mean US Air Quality Index of about 39 in March.
Within 300 km: Fort-de-France's Careme, the dry season around 1 Dec – 30 Apr, and Pointe-à-Pitre's Careme, the dry season around 1 Dec – 30 Apr.