St. Thomas weather in April
In April, St. Thomas sees average daytime highs of 10°C and overnight lows near 3°C, with 95 mm of precipitation across 11.7 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.
Highs climb over the month, from about 7°C in the first days to 13°C by the end. The sky is clear or mostly clear about 23% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is St. Thomas's 7th-clearest and 6th-windiest month. For the whole year in context, see St. Thomas's year-round climate.
- Daytime high
- 10°
- 7th warmest
- Overnight low
- 3°
- 6th coldest
- Precipitation
- 95 mm
- 11.7 wet days
- Daylight
- 13 h 12 min
- 5:50 AM – 7:00 PM
- Cloud cover
- 66%
- 7th clearest
- Wind
- 17 km/h
- 6th windiest
- Solar energy
- 5.11 kWh/m²
- Travel score
- 2.1
- out of 10
Temperature in April
Highs climb over the month, from about 7°C in the first days to 13°C by the end.
A typical April day in St. Thomas reaches about 10°C in the afternoon and slips back to 3°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 15°C. Set against its neighbours, April runs about 6°C warmer than March and about 7°C cooler than May.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 |
| Avg low (°C) | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 7 | 0 |
| 2 | 7 | 1 |
| 3 | 7 | 1 |
| 4 | 7 | 1 |
| 5 | 7 | 1 |
| 6 | 8 | 1 |
| 7 | 8 | 1 |
| 8 | 8 | 2 |
| 9 | 8 | 2 |
| 10 | 9 | 2 |
| 11 | 9 | 2 |
| 12 | 9 | 2 |
| 13 | 9 | 3 |
| 14 | 10 | 3 |
| 15 | 10 | 3 |
| 16 | 10 | 3 |
| 17 | 10 | 4 |
| 18 | 10 | 4 |
| 19 | 11 | 4 |
| 20 | 11 | 4 |
| 21 | 11 | 4 |
| 22 | 11 | 5 |
| 23 | 12 | 5 |
| 24 | 12 | 5 |
| 25 | 12 | 5 |
| 26 | 12 | 5 |
| 27 | 12 | 6 |
| 28 | 13 | 6 |
| 29 | 13 | 6 |
| 30 | 13 | 6 |
How April really feels in St. Thomas
Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 18 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in April is cold — wind chill drags the overnight "feels like" below the raw low.
St. Thomas weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -1° / -7° | 75 | 11.5 | 8.3 | 9.2 | 0.0 |
| Feb | -1° / -7° | 58 | 9.4 | 7 | 10.3 | 0.0 |
| Mar | 4° / -3° | 73 | 10.3 | 4.9 | 11.6 | 0.1 |
| Apr | 10° / 3° | 95 | 11.7 | 1.7 | 13.1 | 2.1 |
| May | 17° / 10° | 94 | 12.1 | 0 | 14.4 | 5.1 |
| Jun | 23° / 16° | 99 | 11.7 | 0 | 15.1 | 6.6 |
| Jul | 25° / 19° | 96 | 12 | 0 | 14.8 | 6.6 |
| Aug | 25° / 18° | 82 | 10.2 | 0 | 13.7 | 7.0 |
| Sep | 21° / 14° | 84 | 9.4 | 0 | 12.3 | 6.6 |
| Oct | 14° / 8° | 86 | 11.5 | 0.1 | 10.8 | 4.0 |
| Nov | 7° / 2° | 81 | 10.8 | 2.6 | 9.6 | 1.0 |
| Dec | 2° / -3° | 74 | 11.5 | 7.1 | 8.9 | 0.0 |
Cloud cover in April
The sky is clear or mostly clear about 23% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 63%.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 34 | 34 | 33 | 33 | 34 | 33 | 33 | 34 | 34 | 35 | 35 | 35 | 37 | 37 | 37 | 38 | 37 | 37 | 38 | 39 | 39 | 39 | 39 | 40 | 40 | 39 | 39 | 40 | 41 | 41 |
| Cloudier (%) | 66 | 66 | 67 | 67 | 66 | 67 | 67 | 66 | 66 | 65 | 65 | 65 | 63 | 63 | 63 | 62 | 63 | 63 | 62 | 61 | 61 | 61 | 61 | 60 | 60 | 61 | 61 | 60 | 59 | 59 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 34 | 66 |
| 2 | 34 | 66 |
| 3 | 33 | 67 |
| 4 | 33 | 67 |
| 5 | 34 | 66 |
| 6 | 33 | 67 |
| 7 | 33 | 67 |
| 8 | 34 | 66 |
| 9 | 34 | 66 |
| 10 | 35 | 65 |
| 11 | 35 | 65 |
| 12 | 35 | 65 |
| 13 | 37 | 63 |
| 14 | 37 | 63 |
| 15 | 37 | 63 |
| 16 | 38 | 62 |
| 17 | 37 | 63 |
| 18 | 37 | 63 |
| 19 | 38 | 62 |
| 20 | 39 | 61 |
| 21 | 39 | 61 |
| 22 | 39 | 61 |
| 23 | 39 | 61 |
| 24 | 40 | 60 |
| 25 | 40 | 60 |
| 26 | 39 | 61 |
| 27 | 39 | 61 |
| 28 | 40 | 60 |
| 29 | 41 | 59 |
| 30 | 41 | 59 |
Chance of precipitation in April
St. Thomas gets around 95 mm of rain and snow over 11.7 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 38% and peaks near 40% on the wettest days, and about 2 days bring snow.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 38 | 39 | 39 | 39 | 40 | 40 | 40 | 39 | 39 |
| Snow chance (%) | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 38 | 11 |
| 2 | 39 | 11 |
| 3 | 39 | 11 |
| 4 | 39 | 10 |
| 5 | 39 | 10 |
| 6 | 39 | 10 |
| 7 | 39 | 9 |
| 8 | 39 | 9 |
| 9 | 38 | 8 |
| 10 | 38 | 8 |
| 11 | 38 | 7 |
| 12 | 37 | 7 |
| 13 | 37 | 6 |
| 14 | 37 | 5 |
| 15 | 37 | 5 |
| 16 | 37 | 4 |
| 17 | 37 | 4 |
| 18 | 37 | 4 |
| 19 | 38 | 3 |
| 20 | 38 | 3 |
| 21 | 38 | 3 |
| 22 | 38 | 2 |
| 23 | 39 | 2 |
| 24 | 39 | 2 |
| 25 | 39 | 2 |
| 26 | 40 | 2 |
| 27 | 40 | 1 |
| 28 | 40 | 1 |
| 29 | 39 | 1 |
| 30 | 39 | 1 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 99 | 99 | 98 | 97 | 97 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| Humid (%) | 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 | 0 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 100 | 0 | 0 |
| 2 | 100 | 0 | 0 |
| 3 | 100 | 0 | 0 |
| 4 | 100 | 0 | 0 |
| 5 | 100 | 0 | 0 |
| 6 | 100 | 0 | 0 |
| 7 | 100 | 0 | 0 |
| 8 | 100 | 0 | 0 |
| 9 | 100 | 0 | 0 |
| 10 | 100 | 0 | 0 |
| 11 | 100 | 0 | 0 |
| 12 | 100 | 0 | 0 |
| 13 | 100 | 0 | 0 |
| 14 | 100 | 0 | 0 |
| 15 | 100 | 0 | 0 |
| 16 | 100 | 0 | 0 |
| 17 | 100 | 0 | 0 |
| 18 | 100 | 0 | 0 |
| 19 | 100 | 0 | 0 |
| 20 | 100 | 0 | 0 |
| 21 | 100 | 0 | 0 |
| 22 | 99 | 1 | 0 |
| 23 | 99 | 1 | 0 |
| 24 | 99 | 1 | 0 |
| 25 | 99 | 1 | 0 |
| 26 | 99 | 1 | 0 |
| 27 | 99 | 1 | 0 |
| 28 | 98 | 2 | 0 |
| 29 | 97 | 2 | 1 |
| 30 | 97 | 2 | 1 |
Wind in April
Winds average 17 km/h in April.
Across April, daily wind ranges from about 16 km/h on the calmest days to 17 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 17 | light breeze |
| 2 | 17 | light breeze |
| 3 | 17 | light breeze |
| 4 | 17 | light breeze |
| 5 | 17 | light breeze |
| 6 | 17 | light breeze |
| 7 | 17 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 17 | light breeze |
| 22 | 17 | light breeze |
| 23 | 17 | light breeze |
| 24 | 17 | light breeze |
| 25 | 17 | light breeze |
| 26 | 17 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 84 minutes over April. Sunrise moves from 6:16 AM to 5:28 AM, and sunset from 6:42 PM to 7:16 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 13.0 | 13.0 | 13.1 | 13.1 | 13.2 | 13.2 | 13.3 | 13.3 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.6 | 13.6 | 13.7 | 13.7 | 13.8 | 13.8 |
| Sunrise (AM) | 6:16 | 6:15 | 6:13 | 6:11 | 6:09 | 6:07 | 6:06 | 6:04 | 6:02 | 6:00 | 5:59 | 5:57 | 5:55 | 5:53 | 5:52 | 5:50 | 5:48 | 5:47 | 5:45 | 5:43 | 5:42 | 5:40 | 5:39 | 5:37 | 5:35 | 5:34 | 5:32 | 5:31 | 5:29 | 5:28 |
| Sunset (PM) | 6:42 | 6:44 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:51 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:12 | 7:13 | 7:14 | 7:15 | 7:16 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 6:16 | 6:42 |
| 2 | 12.5 | 6:15 | 6:44 |
| 3 | 12.5 | 6:13 | 6:45 |
| 4 | 12.6 | 6:11 | 6:46 |
| 5 | 12.6 | 6:09 | 6:47 |
| 6 | 12.7 | 6:07 | 6:48 |
| 7 | 12.7 | 6:06 | 6:49 |
| 8 | 12.8 | 6:04 | 6:51 |
| 9 | 12.8 | 6:02 | 6:52 |
| 10 | 12.9 | 6:00 | 6:53 |
| 11 | 12.9 | 5:59 | 6:54 |
| 12 | 13.0 | 5:57 | 6:55 |
| 13 | 13.0 | 5:55 | 6:56 |
| 14 | 13.1 | 5:53 | 6:58 |
| 15 | 13.1 | 5:52 | 6:59 |
| 16 | 13.2 | 5:50 | 7:00 |
| 17 | 13.2 | 5:48 | 7:01 |
| 18 | 13.3 | 5:47 | 7:02 |
| 19 | 13.3 | 5:45 | 7:03 |
| 20 | 13.4 | 5:43 | 7:05 |
| 21 | 13.4 | 5:42 | 7:06 |
| 22 | 13.4 | 5:40 | 7:07 |
| 23 | 13.5 | 5:39 | 7:08 |
| 24 | 13.5 | 5:37 | 7:09 |
| 25 | 13.6 | 5:35 | 7:10 |
| 26 | 13.6 | 5:34 | 7:12 |
| 27 | 13.7 | 5:32 | 7:13 |
| 28 | 13.7 | 5:31 | 7:14 |
| 29 | 13.8 | 5:29 | 7:15 |
| 30 | 13.8 | 5:28 | 7:16 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.11 kWh/m².
For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.64 kWh/m² in June across the year — April's 5.11 kWh/m² falls in the middle.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.7 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.0 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.1 | Bright |
| 17 | 5.2 | Bright |
| 18 | 5.2 | Bright |
| 19 | 5.2 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.5 | Bright |
| 28 | 5.6 | Bright |
| 29 | 5.6 | Bright |
| 30 | 5.7 | Bright |
Is April a good time to visit St. Thomas?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a weaker month for outdoor sightseeing in St. Thomas.
What to pack for St. Thomas in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, St. Thomas sees daytime highs around 10°C and nights near 3°C. Pack a warm layer. Worth having: rain gear and sun protection. About 12 days see rain.
Sea temperature near St. Thomas in April
The nearest coast averages about 4°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 23°C and coldest in February near 1°C.
It's comfortable for a long swim from Jul 5 to Sep 20 — about 2.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 2 | 1 | 1 | 4 | 10 | 17 | 22 | 23 | 21 | 16 | 10 | 5 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 2 | Bracing |
| Feb | 1 | Bracing |
| Mar | 1 | Bracing |
| Apr | 4 | Bracing |
| May | 10 | Bracing |
| Jun | 17 | Cool |
| Jul | 22 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 16 | Cool |
| Nov | 10 | Bracing |
| Dec | 5 | Bracing |
UV index in St. Thomas in April
Clear-sky midday UV in April peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in St. Thomas peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 9 | 9 | 7 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is St. Thomas?
St. Thomas sits at 42.8°N, 81.2°W, 232 m above sea level, in Canada. The nearest listed city is London, 24 km away.
Topography around St. Thomas
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of St. Thomas.
Within 3 km, the terrain around St. Thomas has only modest variations in elevation — a maximum elevation change of 65 m around an average of 233 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, significant variations in elevation — a maximum elevation change of 251 m.
The land around St. Thomas is covered by trees (35%) and artificial surfaces (33%) within 3 km, cropland (60%) and trees (20%) within 16 km, and cropland (49%) and water (33%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- 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 St. Thomas (42.7736°, -81.1804°, elevation 232 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).