Vejret i Nuku'alofa i september

Forum posters recommend May as a good time to visit Tonga specifically because it falls outside the hottest stretch of the year, part of the island's more comfortable dry season. Posters do caution that even in what's supposedly the best overall season, a stretch of genuinely bad weather remains possible after a long dry spell, underscoring that no month here comes with a guarantee. Given the limited Nuku'alofa-specific detail beyond that general seasonal framing, this note leans on Tonga's broader dry-season pattern for May: expect warm, generally comfortable conditions with a real but reduced chance of rain compared to the wetter half of the year. Posters generally rate May as one of the better months for Nuku'alofa and Tongatapu, comfortable temperatures the main draw even if occasional rough weather can't be entirely ruled out.

Forum posters describe late October through November as offering excellent weather - cooler and less rainy than the wetter months that follow, making it one of the better windows to visit Tonga. Posters do flag that November through April marks the start of Pacific cyclone season, a real risk factor worth tracking even during an otherwise favorable stretch. One visitor described an unusual bad patch of overcast skies, thunderstorms and high winds during a supposedly dry-season stay, a reminder that even a generally good month can bring a rough few days. Posters generally still rate November as a comfortable, drier-side time to visit Nuku'alofa overall.