Tonga
Tonga in May
🌦️ Shoulder (showers)Pleasant, humid and some showers.
🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics
Why May scores 8.9What goes into the score
How it works- Weather comfort8.2
- ✓Comfortable temperatures (27°C highs / 20°C lows)
- !Humid (dew point 21°C)
- !Wet: ~111 mm rain, ~4 heavy-rain days
- Air quality9.8
- ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
- Seasonal hazards10.0
- ·No notable seasonal hazards
- Safety baseline8.0
- ·Normal precautions
| May | Jun | |
|---|---|---|
| Score | 8.9 Excellent | 9.1 Excellent |
| Season | 🌦️ Shoulder (showers) | 🌦️ Shoulder (showers) |
| High / low | 27° / 20° | 26° / 20° |
| Rain | 111 mm | 95 mm |
| Humidity | dew pt 21° | dew pt 20° |
| PM2.5 | 6 µg/m³ | 5 µg/m³ |
Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Nukuʻalofa weather-station normals. Rainfall: Nukuʻalofa weather-station normals (national met service).
Holidays & crowdsMay 2027
No long holidaysNo long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.
No national public holidays in Tonga this month.
National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).
Explore TongaEvents, sights, food & souvenirs
Check event dates locallyA Pacific kingdom of about 170 islands, known for humpback whale swimming in Vava'u and Ha'apai and a strongly traditional Polynesian culture.
No major events on our calendar for May.
Coming up later
Humpback whale seasonDate variesUsually July to October
Humpback whales arrive from Antarctica to breed and give birth.
Why go: This is peak tourist season; book accommodation and tours early.
Where: Vava'u, Ha'apai and Tongatapu
Humpback whale swims
Licensed operators take visitors to swim with humpback whales that come to breed and calve.
💡 Book well ahead, as numbers of licensed boats are limited; note that Sunday is a legally enforced day of rest when most businesses close.
Vava'u island group
A sheltered group of islands popular for sailing, kayaking and whale watching.
Mapu'a 'a Vaca blowholes
A long line of blowholes on Tongatapu's south coast.
💡 Most impressive at high tide with a southerly swell.
Ha'amonga 'a Maui
An ancient stone trilithon on Tongatapu, built around the 13th century.
Royal Palace, Nuku'alofa
The white wooden palace on the capital's waterfront, viewed from outside.
Ha'apai islands
A remote group of low coral islands with quiet beaches and whale watching.
'Ota 'ika
Raw fish marinated in citrus with coconut cream and vegetables.
💡 Local restaurants and markets
Lu pulu
Corned beef and onion wrapped in taro leaves with coconut cream, cooked in an umu.
💡 Feasts and Sunday umu meals
Umu
Food cooked in an underground earth oven, traditionally prepared on Sundays.
💡 Island feasts at resorts and villages
Tropical root crops
Yam, taro and cassava, the staples of Tongan meals.
💡 Talamahu Market, Nuku'alofa
Tapa cloth (ngatu)
Bark cloth decorated with painted designs, used at weddings and funerals.
💡 Handicraft markets in Nuku'alofa
Woven mats and baskets
Pandanus weaving, including fine mats worn at formal occasions.
💡 Talamahu Market and craft centres
Carvings
Wood and bone carvings in Tongan styles.
💡 Handicraft stalls