Roseau in Fall
In fall (September, October and November), Roseau sees average daytime highs around 27°C and overnight lows near 26°C, with 332 mm of rain over about 53 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 44% of the time across fall, and the air most often feels oppressive.
Fall is Roseau's weakest season of the year to visit on our travel score. Roseau has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Roseau's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 26°C
- Rainfall
- 332 mm
- 53 wet days
- Avg wind
- 23 km/h
- Travel score
- 5.4
- weakest season of the year
- Months
- Sep · Oct · Nov
Temperature in Roseau in Fall
Across fall, daytime highs hold fairly steady around 27°C.
A typical fall day in Roseau reaches about 27°C and drops to 26°C overnight. The warmest of the three months is September, the coolest November.
Roseau weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 24° | 32 | 12 | 11.2 | 7.1 |
| Feb | 25° / 24° | 19 | 7 | 11.5 | 7.8 |
| Mar | 25° / 24° | 19 | 6.9 | 11.9 | 7.8 |
| Apr | 26° / 25° | 29 | 8.3 | 12.3 | 7.2 |
| May | 27° / 25° | 44 | 10.2 | 12.7 | 6.7 |
| Jun | 27° / 26° | 47 | 10.5 | 12.9 | 6.4 |
| Jul | 27° / 26° | 76 | 16.4 | 12.8 | 5.8 |
| Aug | 28° / 26° | 99 | 18.4 | 12.5 | 5.4 |
| Sep | 28° / 26° | 113 | 17.1 | 12.1 | 5.3 |
| Oct | 28° / 26° | 118 | 19.1 | 11.7 | 5.2 |
| Nov | 27° / 26° | 101 | 17.1 | 11.3 | 5.7 |
| Dec | 26° / 25° | 48 | 14.2 | 11.1 | 6.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 44% of the time across fall.
Chance of precipitation in Fall
Roseau gets around 332 mm of rain over 53 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 23 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 18 min in early September to 11 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.5 kWh/m².
Hazard calendar for Roseau
In fall, Roseau overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Roseau sits in the Atlantic hurricane belt; the season peaks August–October.
Roseau's rainy season runs July–November, when most of the year's rain falls.
Roseau sees seasonal dust haze (June–July), heaviest in June.
Is fall a good time to visit Roseau?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Roseau for sightseeing.
What to pack for Roseau in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Roseau sees daytime highs around 27°C and nights near 26°C. Pack light clothes, rain gear and sun protection. Worth having: a windbreaker. About 53 days see rain.
Sea temperature near Roseau in Fall
The nearest coast averages about 29°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 29°C and coldest in February near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Roseau in Fall
Clear-sky midday UV across fall averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Roseau peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 11 | 14 | 13 | 12 | 11 | 12 | 11 | 12 | 11 | 8 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Roseau in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Roseau is worst in June — around 28 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 9 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 13 | 11 | 15 | 18 | 28 | 26 | 21 | 16 | 18 | 12 | 9 |
| Level | Good | Moderate | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 13 | Moderate |
| Mar | 11 | Good |
| Apr | 15 | Moderate |
| May | 18 | Moderate |
| Jun | 28 | Moderate |
| Jul | 26 | Moderate |
| Aug | 21 | Moderate |
| Sep | 16 | Moderate |
| Oct | 18 | Moderate |
| Nov | 12 | Moderate |
| Dec | 9 | Good |
Where is Roseau?
Roseau sits at 15.3°N, 61.4°W, 11 m above sea level, in Dominica. The nearest listed city is Sainte-Marie, 72 km away.
Topography around Roseau
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Roseau.
Within 3 km, the terrain around Roseau has significant variations in elevation — a maximum elevation change of 417 m around an average of 66 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,383 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,389 m.
The land around Roseau is covered by water (55%) and trees (38%) within 3 km, water (58%) and trees (41%) within 16 km, and water (89%) within 80 km.
Dominica travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type D / G
- 230 V · 50 Hz
- Prices
- ≈ 48% of US
- price level, 2025
- GDP per capita
- $10,989
- 2025
- Homicide rate
- 27.1
- per 100k, 2023
- Road deaths
- 10.9
- per 100k/yr, 2016
- Income group
- Upper middle
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Roseau (15.3017°, -61.3881°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.