January - February
While St Helena does not experience dramatic seasonal changes in weather, January and February are the hottest months of the year, with temperatures reaching 32ºC by the coast. This is also the best time to experience swimming with whale sharks, which are attracted to the increase in plankton and regularly appear off the coast of the island, sometimes in groups of up to 35 individuals.
MARCh - DECEMBER
St Helena has a mild and agreeable climate year-round, however the island experiences heavier rainfall from late March to early May, and from July to September, peaking in April and August. The coldest months are from June to September, although temperatures in Jamestown still usually range between 15-26ºC.