Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Jamestown is from February, April, November. — consistent weather climate
☀️Pleasant
| Score | 84 | 85 | 83 | 85 | 84 | 83 | 77 | 73 | 73 | 79 | 85 | 83 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant |
| Temperature | 21–23°C | 23–24°C | 23–24°C | 22–24°C | 22–23°C | 20–22°C | 19–21°C | 18–20°C | 18–20°C | 18–20°C | 19–21°C | 20–22°C |
| Feels like | 21–24°C | 22–26°C | 23–26°C | 22–25°C | 20–23°C | 18–20°C | 16–19°C | 16–18°C | 15–18°C | 16–19°C | 17–20°C | 19–22°C |
| Precipitation | 19mm 11 days | 20mm 10 days | 25mm 13 days | 19mm 10 days | 20mm 10 days | 22mm 11 days | 25mm 11 days | 21mm 12 days | 21mm 11 days | 18mm 10 days | 15mm 9 days | 22mm 11 days |
| Sunshine | 12.4h ☀︎ 96% | 11.9h ☀︎ 95% | 11.3h ☀︎ 93% | 10.8h ☀︎ 92% | 10.6h ☀︎ 93% | 10.3h ☀︎ 92% | 9.8h ☀︎ 87% | 8.0h ☀︎ 69% | 8.1h ☀︎ 67% | 8.2h ☀︎ 66% | 9.9h ☀︎ 77% | 11.9h ☀︎ 91% |
| Wind | SE · 28 km/h | SE · 29 km/h | SE · 30 km/h | SE · 30 km/h | SE · 30 km/h | SE · 31 km/h | SE · 33 km/h | SE · 33 km/h | SE · 34 km/h | SE · 32 km/h | SE · 31 km/h | SE · 30 km/h |
| Humidity (%) | 79% | 78% | 78% | 76% | 75% | 73% | 73% | 74% | 76% | 78% | 78% | 79% |
| Day length | 12.9h | 12.6h | 12.2h | 11.7h | 11.4h | 11.2h | 11.3h | 11.6h | 12.0h | 12.5h | 12.9h | 13.1h |
Conventional wisdom points visitors to midsummer February for warmth and sun, but December is the real masterstroke: you get near-identical South Atlantic sunshine and warm coastal breezes without the peak-season congestion that strains an isolated volcanic outpost.
Tucked into the floor of a narrow, barren volcanic canyon on the leeward coast of Saint Helena, Jamestown feels less like a modern administrative capital and more like a Georgian maritime settlement miraculously frozen in time. Sheer basalt cliffs rise hundreds of metres directly behind pale 18th-century façades, funnelling the South Atlantic trade winds over the ridge and leaving the town bathed in a warm, dry microclimate. Travelers cross oceans to reach this speck of rock to walk the exile paths of Napoleon, scramble up sheer rock faces, and absorb the sheer remoteness of an island marooned thousands of miles from continental land. Yet because getting here requires deliberate planning, timing your arrival dictates whether you encounter a serene historical relic or an island running at the absolute limits of its humble infrastructure.
If you looked solely at temperature dials, you would wait until the heart of the southern summer to touch down. That is a mistake. December delivers the supreme experience on Saint Helena, offering the golden combination of nearly twelve hours of sunshine and gentle apparent temperatures hovering right around 22°C, all while visitor numbers sit at their annual low point.
During this pocket of early summer, Main Street maintains an easy, unhurried rhythm. The sun warms the basalt flagstones without turning the valley into a convection oven, making the legendary 699-step climb up Jacob's Ladder bearable in the morning light before the midday glare bounces off the cliffs. Out in the anchorage, the ocean is calm, allowing tender boats to slip into the landing steps without the heavy winter rollers that occasionally bedevil the waterfront.
Most importantly, the island feels like a sanctuary rather than a transit stop. Because visitor traffic has not yet crested toward its annual summit, conversations with locals linger, guided transport into the mist-shrouded highlands is unhurried, and the historic core of Jamestown breathes with the sleepy dignity of its East India Company origins.
Midsummer arrives in January and peaks in February, bringing the warmest sea temperatures and apparent heat that settles firmly around 26°C. On an island where every breeze is prized, Jamestown's steep canyon walls trap the heat during these months. Midday walking on the asphalt and cobblestones demands shade and slow pacing, though the evenings become wonderfully balmy, drawing everyone out toward the seafront to watch the sun drop into the open ocean.
February represents the island's operational zenith, operating at peak crowd levels. On Saint Helena, a surge in visitors has an outsized footprint. Rental vehicles vanish months in advance, seats on tours departing up the winding switchbacks toward the interior book solid, and the narrow historic streets take on a bustling energy that clashes with the island's quintessential solitude.
By March and April, the relentless heat softens by a degree or two, but the crowd pressure remains sustained. While these months offer glorious conditions for pelagic boat trips around the coast to view seabirds or snorkel in clear Atlantic water off Rupert's Bay, you will share every scenic vantage point and harbor berth with the year's largest gatherings of travelers.
As the Southern Hemisphere turns toward winter, Saint Helena shifts character. June through August brings the lowest temperatures of the year, with daytime air feeling closer to 18°C or 19°C. While Jamestown remains sheltered from the persistent rain that drenches the lush, mossy cloud forests of the high interior ridge, the sunlight hours drop sharply, down to around eight hours a day by mid-winter.
July represents the bleakest window on the calendar. Ocean swells from the southern latitudes roll in with formidable power, creating dramatic breaks against the sea wall and sometimes complicating maritime activity along the wharf. The rock faces that flank the town look darker under cloud cover, and the dry, desert-like scrub on the canyon rim feels rugged and windswept.
Yet, this is far from a washout. Rain in Jamestown itself is barely more than a coastal spritz, rarely accumulating enough volume to disrupt a walk between the Georgian storehouses and coastal forts. If you come during these cooler months, you trade sun-drenched coastal days for brisk, empty trails and dramatic, moody ocean scenery, provided you pack layers for when you venture uphill out of the sheltered town basin.
Spring emerges slowly in September, but visitor numbers bounce back immediately, reaching high levels long before the summer warmth truly settles into the stones of Jamestown. September and October can feel strangely out of balance: the crowds return in anticipation of the clear season, but the weather remains brisk, with short daylight hours and a lingering nip in the evening breeze.
November is where the transition finally pays off. The daily sunshine expands rapidly toward ten hours, apparent temperatures push back over 20°C, and the surrounding ocean settles down from its winter agitation. Rainfall drops to its yearly minimum, leaving the town floor dry, crisp, and comfortable for extended walking tours.
If you cannot secure a December berth, November serves as the next best option. It avoids the suffocating valley heat of February while shaking off the gloomier skies of August, catching the island just as the trade winds settle into their summer rhythm.
Saint Helena · Saint Helena, Ascension and Tristan Da Cunha
Saint Helena · Saint Helena, Ascension and Tristan Da Cunha
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