What is the Weather Like in Tonga in June?

June is the time when many travellers from Australia or New Zealand look to escape the winter – often looking to Tonga! Tonga is essentially a winterless group of islands where temperatures are unlikely to drop below 20°C / 67°F! Days tend to be dry and balmy, where it’s extremely comfortable to explore the islands’ historic sites, take part in cultural activities and swim in the warm tropical waters. The influx of tourists to Tonga don’t arrive until mid-June when the whale season starts to stir. Learn more about the temperatures, rainfall and more in this guide to the Tonga weather in June.

5 Tips for Travelling Tonga in June

  • June can be a little too early for successful whale swims, so plan a few days to try your luck or simply set your expectations right
  • While June is considered the dry season, be prepared for rain at any time
  • The water visibility is at its best in June, so pack your mask or book that dive trip!
  • Apply high-factor reef-safe sunscreen in regular intervals
  • Early to mid-June is still a quiet time for tourism in Tonga, so look out for good deals and know that you’ll often get many attractions or even accommodations to yourself!

Typical Temperatures in June

Tonga Weather in June

(c) fijipocketguide.com

Comfortably mild days and cooler nights are a typical June’s day in Tonga. Whether you’re in the sea or out exploring the famous landmarks of Tonga, visitors get that tropical heat experience without the extreme humidity in June. The average maximum temperatures in June is 29°C / 84°F and the average low is 20°C / 67°F.

Temperatures Across Tonga

  • Tongatapu & Nuku’alofa – The average maximum temperature is 26°C / 78°F and the minimum average temperature is 20°C / 67°F
  • Vava’u – The average maximum temperature is 28°C / 82°F and the minimum average temperature is 21°C / 70°F
  • Ha’apai – The average maximum temperature is 26°C / 79°F and the minimum average temperature is 21°C / 70°F
  • ‘Eua – The average maximum temperature is 26°C / 78°F and the minimum average temperature is 20°C / 67°F
  • The Niuas – The average maximum temperature is 29°C / 84°F and the minimum average temperature is 23°C / 73°F

Sea Temperature in June

Tonga has warm sea temperatures all year round, dropping down to 24°C / 75°F in mid-winter. However, June’s waters are the warmest in winter with an average sea temperature of 26°C / 78°F.

Hours of Sun in June

Tonga Weather in June

(c) Pixabay

While the days in June are at their shortest out of the whole year, that’s still an average at 11 hours of daylight. Sunshine hours are typically 5 hours a day.

UV Levels During June

The UV levels in June in Tonga are far less harsh than the islands’ summer months. However, with a level of 7+ UV index around midday, it’s still essential to apply high-factor sunscreen. Be sure to wear high-factor sunscreen. For advice on what sunscreen, check out our 10 Best Environmentally-Friendly Sunscreens for Tonga.

Sunrise and Sunset During June

June has daylight hours lasting around 11 hours a day in Tonga.

  • Sunrise – 7.11am at the beginning of June and 7.19am at the end of June
  • Sunset – 6.06pm at the beginning of June and 6.10pm at the end of June

Learn more about the time zone in Tonga in What is the Tonga Time Zone?.

Rainfall in June

Tonga Weather in June

(c) Pxhere.com

June might be part of the dry season, but that doesn’t mean there isn’t a drop of rain on these tropical islands. Although much drier than in summer, June has an average of 14 days of rain. It’s also the time of the year where the southern islands of Tongatapu and ‘Eua experience a bit more rain than the northern islands of Vava’u (usually, it’s the other way around).

Tonga receives an average of 95mm / 3.7″ of rainfall in the month of June, with around 14 days out of June experiencing rain.

Average Rainfall Across Tonga

  • Tongatapu & Nuku’alofa – The average rainfall in June is 95mm / 3.7″
  • Vava’u – The average rainfall in June is 80mm / 3.1″
  • Ha’apai – The average rainfall in June is 80mm / 3.1″
  • ‘Eua – The average rainfall in June is 95mm / 3.7″
  • The Niuas – The average rainfall in June is 110mm / 4.3″

Tropical Storms in June

Tonga Weather in June

(c) Pixabay

The South Pacific cyclone season runs between November and April. June is one of the best months to avoid tropical cyclones in Tonga with a very low risk of tropical storms developing.

Other months that have a low risk of tropical storms in Tonga include July, August and September.

Find out more about tropical storms in Tonga in How to Prepare for a Cyclone in Tonga.

Best Places to Visit in Tonga in June

Tonga Weather in June

(c) fijipocketguide.com

June is a great time to visit Tonga, as the tourist season gets in full swing and most activity operators are open again for the season. It’s also the early days of the whale season in Tonga, where whales can be seen from Tonga’s southern islands. On top of all that, one of Tonga’s largest events takes place on Tongatapu, the Heilala Festival.

Tongatapu – Tonga’s main island plays host to the Heilala Festival, which celebrates the birthday of the king and includes over a week of celebrations. It’s also the beginning of the whale season, where you could try your chances swimming with whales with the operators from Tongatapu. Otherwise, there’s still plenty more to experience, between limestone caves, blowholes, beaches and cultural activities. Find out more about Tongatapu in The Complete Guide to Tongatapu.

Ha’apai – Often considered a hidden gem of Tonga, the middle island group of Ha’apai might be far less visited but is definitely worth travelling to for the gorgeous beaches and glistening waters of coral and other marine life. Whales are included in the mix, with plenty of operators offering whales swimming off the islands. Find out more in The Complete Guide to Ha’apai.

June Packing List for Tonga

Tonga Weather in June

(c) tongapocketguide.com

How should you pack in June for the weather and the local customs? Check out this list of recommendations…

  • High-factor sunscreen
  • Light cotton layers for the day
  • Light pants/trousers/skirt (for the evenings and to cover the skin in areas where you need to dress more modestly)
  • Light jacket (for the evening or for on boat trips)
  • Sunhat
  • Sunglasses
  • Swimwear
  • Light rain jacket
  • Flip-flops or sandals
  • Snorkel and mask (in case your accommodation doesn’t have ones to rent)

Get more packing ideas with The Complete Packing List for Tonga.

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Tonga Weather in June