Weather in Jamestown

Stay up to date with the current weather conditions in Jamestown. In this section, you will find the latest data, detailed forecasts, and visual weather charts.

The climate in Jamestown is characterised as tropical and very mild, with surprisingly stable temperatures throughout the year. The city enjoys pleasant warmth, while scorching heat is a rarity here. One of the key features of the local weather is the minimal amount of rainfall, making Jamestown an attractive destination for those seeking predominantly sunny days.

Although Jamestown does not have distinct seasons in the traditional sense, slight temperature fluctuations can be noted. The warmest months are from February to April, when the average air temperature is around 23-24°C. It becomes slightly cooler from August to October, with average figures in the region of 19-20°C. Regarding precipitation, the data indicates its almost complete absence in the form of significant rain. However, in certain months, such as April (up to 5 days), as well as March, June, and July (up to 3 days), days with increased humidity or very light, short-lived precipitation may be observed, which, however, do not form a distinct rainy season.

The temperature regime in Jamestown is distinguished by enviable stability throughout the year. The annual range of average temperatures fluctuates from approximately 19.6°C in the coolest months to 24.2°C in the warmest. The hottest month is usually March, when the average temperature reaches 24.2°C, and maximum daytime values can rise to 24.6°C. It is followed by February and April with very similar figures. September and October are considered the coolest, with an average temperature of about 19.6°C and minimum night-time temperatures dropping to 19.2-19.3°C.

The nominally "summer" months, covering the period roughly from December to April, are characterised by very pleasant warmth. Average daytime temperatures at this time remain in a comfortable range from 21.5°C to 24.6°C. The "winter" period, from June to October, brings a slight coolness, but without any sharp drops in temperature. Average temperatures in these months range from approximately 19.6°C to 21.7°C, making the weather mild and suitable for outdoor activities. It is important to note that the change between these periods occurs smoothly, without sudden temperature spikes, maintaining comfortable conditions all year round.

One of the remarkable features of the climate of Jamestown is the minimal difference between day and night temperatures. Analysis of the data shows that fluctuations between average maximum and average minimum temperatures during a single month rarely exceed one degree Celsius. This means that the nights here are practically as warm as the days, without noticeable cooling after sunset, ensuring a constant comfortable temperature background around the clock.

Precipitation in Jamestown is an extremely rare and specific phenomenon. According to the provided data, throughout the year, the average monthly rainfall is 0 mm. This indicates an extremely arid climate. Despite this, a certain number of "wet days" are recorded in some months. It is important to understand that a "wet day" in this context most likely means not full-blown rain, but periods of high humidity, fog, very light drizzle, or traces of precipitation that do not lead to measurable water accumulation.

Speaking of the frequency of such "wet days", the greatest number is observed in April – up to 5 days. Also, 3 wet days fall in March, June, and July. In January, May, and September, only one such day is registered. During these periods, one can expect short-term and very insignificant manifestations of moisture in the atmosphere, but one should not count on typical rains. Snow, given the tropical location and high average annual temperatures, is absolutely uncharacteristic for Jamestown.

The driest months, when the probability of even minimal precipitation tends to zero, are February, August, October, November, and December. During these periods, not a single "wet day" is recorded in Jamestown. Thus, although April can formally be highlighted as the month with the highest probability of minor precipitation, in general, Jamestown is characterised as a very dry place, where rains in the usual sense are practically absent all year round.

When packing your suitcase for a trip to Jamestown, focus on light and breathable clothing suitable for warm weather year-round. The climate of Saint Helena gifts the city with pleasant warmth without exhausting heat, so your wardrobe should consist mainly of summer items: T-shirts, shorts, skirts, and light trousers made of natural fabrics like cotton or linen. Do not forget sunscreen with a high SPF, sunglasses, and headwear (a hat or cap) for protection from the tropical sun. And, of course, comfortable shoes for walking around the city and its surroundings will become your best companion.

Although there is practically no rain in the usual sense in Jamestown (all months show 0 mm of precipitation), in some periods, especially from March to July, so-called "wet days" may occur. This most likely implies increased humidity, morning dew, or very light drizzle. In this case, you can grab a light windbreaker (which will also protect against a possible ocean breeze) or a compact umbrella, although there is usually no acute need for them. In the "coolest" months, from August to October, when the average temperature hovers around 19-20°C, a light sweater, cardigan, or fleece jacket may come in handy for evening walks or if you are sensitive to a slight drop in temperature. The principle of layering is not as critical here as in places with sharp temperature changes, but having one or two warm items would be sensible.