Roseau weather in December
In December, Roseau sees average daytime highs of 26°C and overnight lows near 25°C, with 48 mm of rain across 14.2 wet days and about 11.1 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 72% of the time in December, and the air most often feels oppressive.
Daylight stretches from about 11 h 12 min at the start of December to 11 h 06 min by month's end. Set against the rest of the year, December is Roseau's 4th-clearest and 5th-windiest month. For the whole year in context, see Roseau's year-round climate.
- Daytime high
- 26°
- 8th warmest
- Overnight low
- 25°
- 5th coldest
- Rainfall
- 48 mm
- 14.2 wet days
- Daylight
- 11 h 06 min
- 6:29 AM – 5:35 PM
- Cloud cover
- 35%
- 4th clearest
- Wind
- 28 km/h
- 5th windiest
- Solar energy
- 4.81 kWh/m²
- Travel score
- 6.4
- out of 10
Roseau is capital of Dominica.
- Density
- 3,069/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 26°C through the month.
A typical December day in Roseau reaches about 26°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, December runs on par with November and on par with January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 25 |
| 2 | 27 | 25 |
| 3 | 27 | 25 |
| 4 | 27 | 25 |
| 5 | 26 | 25 |
| 6 | 26 | 25 |
| 7 | 26 | 25 |
| 8 | 26 | 25 |
| 9 | 26 | 25 |
| 10 | 26 | 25 |
| 11 | 26 | 25 |
| 12 | 26 | 25 |
| 13 | 26 | 25 |
| 14 | 26 | 25 |
| 15 | 26 | 25 |
| 16 | 26 | 25 |
| 17 | 26 | 25 |
| 18 | 26 | 25 |
| 19 | 26 | 25 |
| 20 | 26 | 25 |
| 21 | 26 | 25 |
| 22 | 26 | 25 |
| 23 | 26 | 25 |
| 24 | 26 | 25 |
| 25 | 26 | 25 |
| 26 | 26 | 25 |
| 27 | 26 | 25 |
| 28 | 26 | 25 |
| 29 | 26 | 25 |
| 30 | 26 | 25 |
| 31 | 26 | 25 |
Roseau weather by month
How December compares with the rest of the year at a glance. December is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.
| 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 December
The sky is clear or mostly clear about 72% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 80 | 80 | 80 | 81 | 81 | 81 | 81 | 81 | 82 | 82 | 83 | 83 | 83 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 84 | 85 | 85 | 85 | 86 | 86 | 87 | 87 | 87 | 88 | 89 |
| Cloudier (%) | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 80 | 20 |
| 2 | 80 | 20 |
| 3 | 80 | 20 |
| 4 | 81 | 19 |
| 5 | 81 | 19 |
| 6 | 81 | 19 |
| 7 | 81 | 19 |
| 8 | 81 | 19 |
| 9 | 82 | 18 |
| 10 | 82 | 18 |
| 11 | 83 | 17 |
| 12 | 83 | 17 |
| 13 | 83 | 17 |
| 14 | 84 | 16 |
| 15 | 84 | 16 |
| 16 | 84 | 16 |
| 17 | 84 | 16 |
| 18 | 84 | 16 |
| 19 | 84 | 16 |
| 20 | 84 | 16 |
| 21 | 84 | 16 |
| 22 | 85 | 15 |
| 23 | 85 | 15 |
| 24 | 85 | 15 |
| 25 | 86 | 14 |
| 26 | 86 | 14 |
| 27 | 87 | 13 |
| 28 | 87 | 13 |
| 29 | 87 | 13 |
| 30 | 88 | 12 |
| 31 | 89 | 11 |
Chance of precipitation in December
Roseau gets around 48 mm of rain over 14.2 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 46% and peaks near 49% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 46 | 46 | 47 | 48 | 48 | 48 | 49 | 49 |
| Rain chance (%) | |
|---|---|
| 1 | 48 |
| 2 | 48 |
| 3 | 48 |
| 4 | 48 |
| 5 | 48 |
| 6 | 47 |
| 7 | 47 |
| 8 | 47 |
| 9 | 46 |
| 10 | 46 |
| 11 | 46 |
| 12 | 45 |
| 13 | 45 |
| 14 | 45 |
| 15 | 44 |
| 16 | 44 |
| 17 | 44 |
| 18 | 44 |
| 19 | 44 |
| 20 | 44 |
| 21 | 44 |
| 22 | 45 |
| 23 | 45 |
| 24 | 46 |
| 25 | 46 |
| 26 | 47 |
| 27 | 48 |
| 28 | 48 |
| 29 | 48 |
| 30 | 49 |
| 31 | 49 |
Humidity in December
Most of December feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the oppressive band about 77% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 14 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 29 | 30 | 31 |
| Oppressive (%) | 84 | 83 | 83 | 82 | 83 | 83 | 82 | 82 | 81 | 81 | 81 | 80 | 80 | 79 | 78 | 78 | 77 | 77 | 76 | 75 | 75 | 74 | 74 | 73 | 73 | 72 | 72 | 71 | 70 | 69 | 68 |
| Miserable (%) | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 1 | 14 | 84 | 1 |
| 2 | 1 | 15 | 83 | 1 |
| 3 | 1 | 15 | 83 | 1 |
| 4 | 1 | 16 | 82 | 1 |
| 5 | 1 | 16 | 83 | 0 |
| 6 | 1 | 16 | 83 | 0 |
| 7 | 1 | 17 | 82 | 0 |
| 8 | 1 | 17 | 82 | 0 |
| 9 | 1 | 18 | 81 | 0 |
| 10 | 1 | 18 | 81 | 0 |
| 11 | 1 | 18 | 81 | 0 |
| 12 | 1 | 19 | 80 | 0 |
| 13 | 1 | 19 | 80 | 0 |
| 14 | 1 | 20 | 79 | 0 |
| 15 | 1 | 21 | 78 | 0 |
| 16 | 1 | 21 | 78 | 0 |
| 17 | 1 | 22 | 77 | 0 |
| 18 | 1 | 22 | 77 | 0 |
| 19 | 1 | 23 | 76 | 0 |
| 20 | 1 | 24 | 75 | 0 |
| 21 | 1 | 24 | 75 | 0 |
| 22 | 1 | 25 | 74 | 0 |
| 23 | 1 | 25 | 74 | 0 |
| 24 | 1 | 26 | 73 | 0 |
| 25 | 1 | 26 | 73 | 0 |
| 26 | 1 | 27 | 72 | 0 |
| 27 | 1 | 27 | 72 | 0 |
| 28 | 1 | 28 | 71 | 0 |
| 29 | 1 | 29 | 70 | 0 |
| 30 | 1 | 30 | 69 | 0 |
| 31 | 1 | 31 | 68 | 0 |
Wind in December
Winds average 28 km/h in December.
Across December, daily wind ranges from about 27 km/h on the calmest days to 30 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | windy | windy | windy | windy | windy | windy | windy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 27 | breezy |
| 2 | 27 | breezy |
| 3 | 27 | breezy |
| 4 | 27 | breezy |
| 5 | 27 | breezy |
| 6 | 27 | breezy |
| 7 | 27 | breezy |
| 8 | 27 | breezy |
| 9 | 28 | breezy |
| 10 | 28 | breezy |
| 11 | 28 | breezy |
| 12 | 28 | breezy |
| 13 | 28 | breezy |
| 14 | 28 | breezy |
| 15 | 28 | breezy |
| 16 | 28 | breezy |
| 17 | 28 | breezy |
| 18 | 28 | breezy |
| 19 | 28 | breezy |
| 20 | 28 | breezy |
| 21 | 29 | breezy |
| 22 | 29 | breezy |
| 23 | 29 | breezy |
| 24 | 29 | breezy |
| 25 | 29 | windy |
| 26 | 29 | windy |
| 27 | 29 | windy |
| 28 | 30 | windy |
| 29 | 30 | windy |
| 30 | 30 | windy |
| 31 | 30 | windy |
Sunrise & sunset in December
Daylight runs from about 11 h 12 min at the start of December to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 6:21 AM to 6:36 AM, and sunset from 5:30 PM to 5:42 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.2 | 11.2 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 | 11.1 |
| Sunrise (AM) | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:25 | 6:25 | 6:26 | 6:26 | 6:27 | 6:27 | 6:28 | 6:28 | 6:29 | 6:29 | 6:30 | 6:30 | 6:31 | 6:31 | 6:32 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 |
| Sunset (PM) | 5:30 | 5:30 | 5:30 | 5:31 | 5:31 | 5:31 | 5:31 | 5:32 | 5:32 | 5:32 | 5:33 | 5:33 | 5:33 | 5:34 | 5:34 | 5:35 | 5:35 | 5:35 | 5:36 | 5:36 | 5:37 | 5:37 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.2 | 6:21 | 5:30 |
| 2 | 11.2 | 6:21 | 5:30 |
| 3 | 11.1 | 6:22 | 5:30 |
| 4 | 11.1 | 6:22 | 5:31 |
| 5 | 11.1 | 6:23 | 5:31 |
| 6 | 11.1 | 6:23 | 5:31 |
| 7 | 11.1 | 6:24 | 5:31 |
| 8 | 11.1 | 6:25 | 5:32 |
| 9 | 11.1 | 6:25 | 5:32 |
| 10 | 11.1 | 6:26 | 5:32 |
| 11 | 11.1 | 6:26 | 5:33 |
| 12 | 11.1 | 6:27 | 5:33 |
| 13 | 11.1 | 6:27 | 5:33 |
| 14 | 11.1 | 6:28 | 5:34 |
| 15 | 11.1 | 6:28 | 5:34 |
| 16 | 11.1 | 6:29 | 5:35 |
| 17 | 11.1 | 6:29 | 5:35 |
| 18 | 11.1 | 6:30 | 5:35 |
| 19 | 11.1 | 6:30 | 5:36 |
| 20 | 11.1 | 6:31 | 5:36 |
| 21 | 11.1 | 6:31 | 5:37 |
| 22 | 11.1 | 6:32 | 5:37 |
| 23 | 11.1 | 6:32 | 5:38 |
| 24 | 11.1 | 6:33 | 5:38 |
| 25 | 11.1 | 6:33 | 5:39 |
| 26 | 11.1 | 6:34 | 5:39 |
| 27 | 11.1 | 6:34 | 5:40 |
| 28 | 11.1 | 6:34 | 5:40 |
| 29 | 11.1 | 6:35 | 5:41 |
| 30 | 11.1 | 6:35 | 5:41 |
| 31 | 11.1 | 6:36 | 5:42 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.81 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 6.7 kWh/m² in April across the year — December's 4.81 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.8 | Bright |
| 20 | 4.8 | Bright |
| 21 | 4.8 | Bright |
| 22 | 4.8 | Bright |
| 23 | 4.8 | Bright |
| 24 | 4.8 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
| 31 | 4.8 | Bright |
Hazard calendar for Roseau
None of Roseau's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
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 December a good time to visit Roseau?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Roseau for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Roseau in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Roseau sees daytime highs around 26°C and nights near 25°C. Pack rain gear and a windbreaker. Worth having: light clothes and sun protection. About 14 days see rain.
Sea temperature near Roseau in December
The nearest coast averages about 28°C in December — 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 December
Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. 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 December
Average fine-particle pollution (PM2.5) through the year — so you can see where December 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).