Jamestown weather in March

March in Jamestown: warm, dry, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Jamestown Saint Helena · Namibia & Botswana · Island91
  1. 92Jan
  2. 92Feb
  3. 91Mar
  4. 92Apr
  5. 91May
  6. 90Jun
  7. 88Jul
  8. 87Aug
  9. 87Sep
  10. 88Oct
  11. 90Nov
  12. 91Dec

#4 of 12 months in Jamestown · #111 of 1413 destinations to visit in March · comfort 91/100 (tier S)

Days
25°C
Nights
24°C
Wet days
2
Sun
11 h
Humidity
76%
Daylight
12 h
Jamestown, Saint Helena
Photo: Marlin Clark · Pexels

Traveller notes on Jamestown in March

Other months in Jamestown

Forum posters describe July in Jamestown, St Helena as bringing beautiful weather overall, warm during the day but noticeably cooler once the sun sets, enough that a light jacket or sweater becomes genuinely useful in the evening. Posters describe the wider island as green and mountainous rather than a beach destination - no palm trees or sandy beaches here - with real rain a regular feature of the climate in St Helena's lush interior highlands; Jamestown itself, down on the arid coast, actually stays quite dry year-round, with July its wettest month by the island's own climate record and still under 4 rainy days on average. Posters generally rate July as pleasant by day and cool by night for coastal Jamestown itself, a light layer for evenings the main packing consideration, with genuinely wetter, greener conditions found only once you head up into the island's highlands.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗
Trip reports for this famously remote South Atlantic island - roughly 1,200 miles off the coast of West Africa - are sparse on the forum, but posters do flag genuine weather variability: one review simply called it crazy and recommended bringing a jacket, while others found it not very hot and fairly windy, and rough weather has caused real flight delays and cut planned excursion time short on more than one visit. Given the thin destination-specific detail, this note leans on the well-established regional pattern for St. Helena's subtropical, trade-wind-moderated climate: January sits in the island's warmer half of the year, though rainfall stays light and infrequent essentially year-round here - the driest stretch by rainy-day count actually falls later, from around September through November, so warmth and dryness don't track together the way they do on many islands. Posters' own accounts suggest coming prepared for wind and a sudden change in conditions regardless of season.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

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Jamestown climate normals — March

Daytime high25°C / 76°F🌤 warm
Nighttime low24°C / 75°F
Feels like (high)26°C / 79°F
Sea temperature25°C / 77°F😎 warm sea
Rainfall8 mm / 0.3 in☀️ dry
Rainy days2 days
Humidity76%💦 very humid
Dew point20°C / 67°F
Sunshine11 h/day
Daylight12.2 h
Wind28 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)

JFMAMJJASOND

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.

JFMAMJJASOND

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 early

    Whale 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 ↗

What's on around the world in March →

Where is Jamestown?

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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.