Jamestown weather in August
In August, Jamestown sees average daytime highs of 20°C and overnight lows near 19°C, with 2 mm of rain across 0.3 wet days and about 11.5 hours of daylight. It is the 10th-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 8% of the time in August, and the air most often feels comfortable.
Daylight stretches from about 11 h 18 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Jamestown's 10th-clearest and 1st-windiest month. For the whole year in context, see Jamestown's year-round climate.
- Daytime high
- 20°
- 10th warmest
- Overnight low
- 19°
- 3rd coldest
- Rainfall
- 2 mm
- 0.3 wet days
- Daylight
- 11 h 30 min
- 6:43 AM – 6:11 PM
- Cloud cover
- 68%
- 10th clearest
- Wind
- 29 km/h
- 1st windiest
- Solar energy
- 4.53 kWh/m²
- Travel score
- 7.4
- out of 10
Jamestown is capital of Saint Helena.
- Density
- 177/km²
- people per km²
- Founded
- 1659
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 20°C through the month.
A typical August day in Jamestown reaches about 20°C in the afternoon and slips back to 19°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 20°C. Set against its neighbours, August runs on par with July and on par with September.
| 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) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 19 |
| 2 | 20 | 19 |
| 3 | 20 | 19 |
| 4 | 20 | 19 |
| 5 | 20 | 19 |
| 6 | 20 | 19 |
| 7 | 20 | 19 |
| 8 | 20 | 19 |
| 9 | 20 | 19 |
| 10 | 20 | 19 |
| 11 | 20 | 19 |
| 12 | 20 | 19 |
| 13 | 20 | 19 |
| 14 | 20 | 19 |
| 15 | 20 | 19 |
| 16 | 20 | 19 |
| 17 | 20 | 19 |
| 18 | 20 | 19 |
| 19 | 20 | 19 |
| 20 | 20 | 19 |
| 21 | 20 | 19 |
| 22 | 20 | 19 |
| 23 | 20 | 19 |
| 24 | 20 | 19 |
| 25 | 20 | 19 |
| 26 | 20 | 19 |
| 27 | 20 | 19 |
| 28 | 20 | 19 |
| 29 | 20 | 19 |
| 30 | 20 | 19 |
| 31 | 20 | 19 |
Jamestown weather by month
How August compares with the rest of the year at a glance. August is the 10th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 22° | 2 | 0.4 | 12.8 | 8.6 |
| Feb | 24° / 23° | 3 | 0.6 | 12.5 | 8.8 |
| Mar | 24° / 24° | 5 | 1.4 | 12.1 | 8.7 |
| Apr | 24° / 23° | 3 | 0.6 | 11.7 | 8.7 |
| May | 23° / 22° | 4 | 1.1 | 11.3 | 8.3 |
| Jun | 22° / 21° | 5 | 1.1 | 11.1 | 7.9 |
| Jul | 21° / 20° | 3 | 0.5 | 11.1 | 7.7 |
| Aug | 20° / 19° | 2 | 0.3 | 11.5 | 7.4 |
| Sep | 20° / 19° | 1 | 0.1 | 11.9 | 7.3 |
| Oct | 20° / 19° | 1 | 0.1 | 12.4 | 7.4 |
| Nov | 20° / 20° | 1 | 0 | 12.7 | 7.7 |
| Dec | 21° / 21° | 1 | 0 | 12.9 | 8.2 |
Cloud cover in August
The sky is clear or mostly clear about 8% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 24% of August, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to cloud over 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 (%) | 42 | 41 | 40 | 38 | 38 | 36 | 36 | 35 | 34 | 34 | 34 | 33 | 33 | 33 | 32 | 31 | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 |
| Cloudier (%) | 58 | 59 | 60 | 62 | 62 | 64 | 64 | 65 | 66 | 66 | 66 | 67 | 67 | 67 | 68 | 69 | 69 | 69 | 69 | 70 | 71 | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 73 | 74 | 74 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 42 | 58 |
| 2 | 41 | 59 |
| 3 | 40 | 60 |
| 4 | 38 | 62 |
| 5 | 38 | 62 |
| 6 | 36 | 64 |
| 7 | 36 | 64 |
| 8 | 35 | 65 |
| 9 | 34 | 66 |
| 10 | 34 | 66 |
| 11 | 34 | 66 |
| 12 | 33 | 67 |
| 13 | 33 | 67 |
| 14 | 33 | 67 |
| 15 | 32 | 68 |
| 16 | 31 | 69 |
| 17 | 31 | 69 |
| 18 | 31 | 69 |
| 19 | 31 | 69 |
| 20 | 30 | 70 |
| 21 | 29 | 71 |
| 22 | 29 | 71 |
| 23 | 29 | 71 |
| 24 | 28 | 72 |
| 25 | 28 | 72 |
| 26 | 28 | 72 |
| 27 | 27 | 73 |
| 28 | 27 | 73 |
| 29 | 27 | 73 |
| 30 | 26 | 74 |
| 31 | 26 | 74 |
Chance of precipitation in August
Jamestown gets around 2 mm of rain over 0.3 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 1% and peaks near 2% 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 (%) | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Rain chance (%) | |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 1 |
| 21 | 1 |
| 22 | 1 |
| 23 | 1 |
| 24 | 1 |
| 25 | 0 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
| 31 | 0 |
Humidity in August
Most of August feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the comfortable band about 84% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 |
| Comfortable (%) | 82 | 82 | 82 | 82 | 82 | 83 | 83 | 83 | 83 | 84 | 85 | 85 | 85 | 85 | 85 | 86 | 85 | 85 | 85 | 85 | 85 | 85 | 84 | 84 | 83 | 83 | 82 | 83 | 83 | 82 | 81 |
| Humid (%) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 13 | 14 | 15 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 6 | 82 | 12 |
| 2 | 6 | 82 | 12 |
| 3 | 6 | 82 | 12 |
| 4 | 6 | 82 | 12 |
| 5 | 6 | 82 | 12 |
| 6 | 5 | 83 | 12 |
| 7 | 5 | 83 | 12 |
| 8 | 5 | 83 | 12 |
| 9 | 5 | 83 | 12 |
| 10 | 4 | 84 | 12 |
| 11 | 4 | 85 | 11 |
| 12 | 4 | 85 | 11 |
| 13 | 4 | 85 | 11 |
| 14 | 4 | 85 | 11 |
| 15 | 4 | 85 | 11 |
| 16 | 4 | 86 | 10 |
| 17 | 5 | 85 | 10 |
| 18 | 5 | 85 | 10 |
| 19 | 5 | 85 | 10 |
| 20 | 5 | 85 | 10 |
| 21 | 5 | 85 | 10 |
| 22 | 5 | 85 | 10 |
| 23 | 5 | 84 | 11 |
| 24 | 5 | 84 | 11 |
| 25 | 5 | 83 | 12 |
| 26 | 5 | 83 | 12 |
| 27 | 5 | 82 | 13 |
| 28 | 4 | 83 | 13 |
| 29 | 4 | 83 | 13 |
| 30 | 4 | 82 | 14 |
| 31 | 4 | 81 | 15 |
Wind in August
Winds average 29 km/h in August, the windiest month of the year.
Across August, daily wind ranges from about 27 km/h on the calmest days to 29 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 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| 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 | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 27 | breezy |
| 2 | 27 | breezy |
| 3 | 27 | breezy |
| 4 | 27 | breezy |
| 5 | 28 | breezy |
| 6 | 28 | breezy |
| 7 | 28 | breezy |
| 8 | 28 | breezy |
| 9 | 28 | breezy |
| 10 | 28 | breezy |
| 11 | 28 | breezy |
| 12 | 28 | breezy |
| 13 | 28 | breezy |
| 14 | 29 | breezy |
| 15 | 29 | breezy |
| 16 | 29 | breezy |
| 17 | 29 | breezy |
| 18 | 29 | breezy |
| 19 | 29 | breezy |
| 20 | 29 | breezy |
| 21 | 29 | breezy |
| 22 | 29 | breezy |
| 23 | 29 | breezy |
| 24 | 29 | breezy |
| 25 | 29 | breezy |
| 26 | 29 | breezy |
| 27 | 29 | breezy |
| 28 | 29 | breezy |
| 29 | 29 | breezy |
| 30 | 29 | breezy |
| 31 | 29 | breezy |
Sunrise & sunset in August
Daylight runs from about 11 h 18 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over August. Sunrise moves from 6:50 AM to 6:33 AM, and sunset from 6:07 PM to 6:13 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) | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 |
| Sunrise (AM) | 6:50 | 6:50 | 6:50 | 6:49 | 6:49 | 6:48 | 6:48 | 6:47 | 6:47 | 6:46 | 6:46 | 6:45 | 6:45 | 6:44 | 6:44 | 6:43 | 6:43 | 6:42 | 6:41 | 6:41 | 6:40 | 6:39 | 6:39 | 6:38 | 6:37 | 6:36 | 6:36 | 6:35 | 6:34 | 6:34 | 6:33 |
| Sunset (PM) | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:09 | 6:09 | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:11 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:13 | 6:13 | 6:13 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.3 | 6:50 | 6:07 |
| 2 | 11.3 | 6:50 | 6:08 |
| 3 | 11.3 | 6:50 | 6:08 |
| 4 | 11.3 | 6:49 | 6:08 |
| 5 | 11.3 | 6:49 | 6:08 |
| 6 | 11.3 | 6:48 | 6:09 |
| 7 | 11.3 | 6:48 | 6:09 |
| 8 | 11.4 | 6:47 | 6:09 |
| 9 | 11.4 | 6:47 | 6:09 |
| 10 | 11.4 | 6:46 | 6:10 |
| 11 | 11.4 | 6:46 | 6:10 |
| 12 | 11.4 | 6:45 | 6:10 |
| 13 | 11.4 | 6:45 | 6:10 |
| 14 | 11.4 | 6:44 | 6:10 |
| 15 | 11.4 | 6:44 | 6:11 |
| 16 | 11.5 | 6:43 | 6:11 |
| 17 | 11.5 | 6:43 | 6:11 |
| 18 | 11.5 | 6:42 | 6:11 |
| 19 | 11.5 | 6:41 | 6:11 |
| 20 | 11.5 | 6:41 | 6:12 |
| 21 | 11.5 | 6:40 | 6:12 |
| 22 | 11.5 | 6:39 | 6:12 |
| 23 | 11.6 | 6:39 | 6:12 |
| 24 | 11.6 | 6:38 | 6:12 |
| 25 | 11.6 | 6:37 | 6:12 |
| 26 | 11.6 | 6:36 | 6:12 |
| 27 | 11.6 | 6:36 | 6:13 |
| 28 | 11.6 | 6:35 | 6:13 |
| 29 | 11.6 | 6:34 | 6:13 |
| 30 | 11.7 | 6:34 | 6:13 |
| 31 | 11.7 | 6:33 | 6:13 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.53 kWh/m².
For context, solar energy here swings from a low near 3.89 kWh/m² to a high of 7.11 kWh/m² in January across the year — August's 4.53 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 |
| 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 | 4.3 | Bright |
| 2 | 4.3 | Bright |
| 3 | 4.3 | Bright |
| 4 | 4.3 | Bright |
| 5 | 4.3 | Bright |
| 6 | 4.3 | Bright |
| 7 | 4.3 | Bright |
| 8 | 4.4 | Bright |
| 9 | 4.4 | Bright |
| 10 | 4.4 | Bright |
| 11 | 4.4 | Bright |
| 12 | 4.4 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.8 | Bright |
| 26 | 4.8 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.9 | Bright |
| 31 | 4.9 | Bright |
Is August a good time to visit Jamestown?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is one of the better times to visit Jamestown for general sightseeing.
What to pack for Jamestown in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Jamestown sees daytime highs around 20°C and nights near 19°C. Pack a windbreaker. Worth having: sun protection.
Sea temperature near Jamestown in August
The nearest coast averages about 21°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in March at about 25°C and coldest in October near 20°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) | 23 | 24 | 25 | 25 | 24 | 23 | 22 | 21 | 20 | 20 | 21 | 22 |
| Comfort | Refreshing | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 24 | Warm |
| Mar | 25 | Warm |
| Apr | 25 | Warm |
| May | 24 | Refreshing |
| Jun | 23 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 20 | Refreshing |
| Oct | 20 | Refreshing |
| Nov | 21 | Refreshing |
| Dec | 22 | Refreshing |
UV index in Jamestown in August
Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Jamestown peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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) | 14 | 13 | 13 | 11 | 9 | 8 | 8 | 8 | 10 | 11 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 10 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Where is Jamestown?
Jamestown sits at 15.9°S, 5.7°W, 10 m above sea level, in Saint Helena. The nearest listed city is Tômbua, 1,878 km away.
Topography around Jamestown
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Jamestown.
Within 3 km, the terrain around Jamestown has significant variations in elevation — a maximum elevation change of 581 m around an average of 155 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 795 m; within 80 km, large variations in elevation — a maximum elevation change of 766 m.
The land around Jamestown is covered by water (44%) and shrubs (27%) within 3 km, water (85%) within 16 km, and water (97%) within 80 km.
Saint Helena travel facts
- Power plugs
- Type G
- 230 V · 50 Hz
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 Jamestown (-15.9249°, -5.7182°, elevation 10 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).