SeasonMapJamestown weather in March
Saint Helena
March in Jamestown: warm, dry, with clean air — an excellent time to visit.
#4 of 12 months in Jamestown · #107 of 1383 destinations to visit in March · comfort 91/100 (tier S)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Jamestown in March
No notes yet. Open Jamestown on the map to add the first one.
Jamestown climate normals — March
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 26°C / 79°F | |
| Sea temperature | 25°C / 77°F | 😎 warm sea |
| Rainfall | 8 mm / 0.3 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 20°C / 67°F | |
| Sunshine | 11 h/day | |
| Daylight | 12.2 h | |
| Wind | 28 km/h / 18 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Jamestown 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.
Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Jamestown'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 weatherJamestown's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Jamestown in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Whale shark season
1 Jan – 30 Apr · usuallyDive seasonBook earlyWhale sharks aggregate off the island between January and April and boats go out from Jamestown to snorkel with them. It is snorkelling only, eight people in the water at a time, and touching them is an offence. Source ↗
Where is Jamestown?
Jamestown in March — FAQ
- Is March a good time to visit Jamestown?
- March in Jamestown: warm, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Jamestown on SeasonMap's comfort score (91/100).
- What is the weather like in Jamestown in March?
- In March, Jamestown averages a daily high of 24.5°C and a low of 23.7°C, with about 8 mm of rain over roughly 2.3 rainy days.
- What is the air quality in Jamestown in March?
- Jamestown has a mean US Air Quality Index of about 50 in March.