What is the Weather Like in Tonga in July?

What does winter look like in Tonga? Well, think balmy days of around 26°C / 79°F, slightly cooler evenings and sunshine most of the time. No wonder July is one of the most popular times to visit the islands! The weather and sea temperatures are ideal for doing just about any activity in Tonga, including whale swimming where the season officially begins in July. Due to the fact that Tonga has mostly boutique accommodations, its best to book your spot during the busier tourist season early. Otherwise, check out more tips about the climate in this guide to the Tonga weather in July!

5 Tips for Travelling Tonga in July

  • July is part of the peak season in Tonga, so book accommodation in advance to avoid disappointment
  • The evenings feel considerably cooler than during the day, so be sure to pack a light jacket – this will be useful on boat trips too
  • July is when the whale season officially starts but it can be a little too early for successful whale swims on every trip – plan a few days to try your luck
  • While July is considered the dry season, be prepared for rain at any time
  • Apply high-factor reef-safe sunscreen regularly!

Typical Temperatures in July

Tonga Weather in July

(c) tongapocketguide.com

Warm, balmy and with mild sea temperatures, Tonga sure has a good winter season. The average maximum temperatures in July is 29°C / 84°F, which is often extremely comfortable and soothing throughout the day. Evenings are a little cooler, however, where it’s best to have an extra layer, especially when combined with an island breeze! The average low is 18°C / 65°F.

Temperatures Across Tonga

  • Tongatapu & Nuku’alofa – The average maximum temperature is 25°C / 77°F and the minimum average temperature is 18°C / 65°F
  • Vava’u – The average maximum temperature is 27°C / 81°F and the minimum average temperature is 20°C / 68°F
  • Ha’apai – The average maximum temperature is 26°C / 79°F and the minimum average temperature is 20°C / 68°F
  • ‘Eua – The average maximum temperature is 25°C / 77°F and the minimum average temperature is 18°C / 65°F
  • The Niuas – The average maximum temperature is 29°C / 84°F and the minimum average temperature is 22°C / 73°F

Sea Temperature in July

Tonga has warm sea temperatures all year round. Even in winter, the sea temperature rarely drops below 25°C / 76°F.

Hours of Sun in July

Tonga Weather in July

(c) Pxhere.com

During July, Tonga’s daylight hours are 11 hours long – pretty long considering we are in the winter months. Visitors will experience an average of 4 hours of bright sunshine per day.

UV Levels During July

The UV levels in July in Tonga are pretty mild with a level of 6 UV index around midday. Nevertheless, it’s still a good idea to apply high-factor sunscreen. For advice on what sunscreen, check out our 10 Best Environmentally-Friendly Sunscreens for Tonga.

Sunrise and Sunset During July

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

  • Sunrise – 7.19am at the beginning of July and 7.13am at the end of July
  • Sunset – 6.11pm at the beginning of July and 6.22pm at the end of July

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

Rainfall in July

Tonga Weather in July

(c) tongapocketguide.com

Although it’s in the dry season, it is still likely to rain at some point during your Tonga exploration. It rains an average of 15 days during July, one of the highest recorded months of rainfall in the winter season.

Tonga receives an average of 95mm / 3.7″ of rainfall in the month of July, with around 15 days out of July experiencing rain.

Average Rainfall Across Tonga

  • Tongatapu & Nuku’alofa – The average rainfall in July is 95mm / 3.7″
  • Vava’u – The average rainfall in July is 90mm / 3.5″
  • Ha’apai – The average rainfall in July is 90mm / 3.5″
  • ‘Eua – The average rainfall in July is 95mm / 3.7″
  • The Niuas – The average rainfall in July is 135mm / 5.3″

Tropical Storms in July

Tonga Weather in July

(c) fijipocketguide.com

The South Pacific cyclone season starts in the month of November and ends in April. Therefore, July is one of the best months to visit Tonga without the risk of tropical cyclones or storms.

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

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

Best Places to Visit in Tonga in July

Tonga Weather in July

(c) tongapocketguide.com

July is a lively time to visit Tonga, especially with the Heilala Festival celebrations in full swing at the beginning of the month. The best place to experience the celebrations is in Nuku’alofa, the nation’s capital on Tongatapu. Alternatively, more and more whales can be seen frequenting the waters, so head to groups like Vava’u or Ha’apai for whale swimming and an outer island experience.

Vava’u – July is when the whale season officially starts in the island group of Vava’u. The group of 61 islands in the northern region of Tonga is also renowned for its water sports, from scuba diving to game fishing. Find out more about Vava’u in The Complete Guide to Vava’u.

Tongatapu – With the Heilala Festival still going strong at the beginning on the month, Tongatapu, and more specifically Nuku’alofa, is an intriguing place to get a taste of the Tongan culture and their celebrations around the king’s birthday (4th July). Otherwise, whale watching, fishing charters and scuba diving can be enjoyed on the water, while on land, there are many historical and cultural sites to visit. Find out more in The Complete Guide to Tongatapu.

July Packing List for Tonga

Tonga Weather in July

(c) STIL on Unsplash

Packing for July in Tonga requires more than just a T-shirt and shorts. Here are a few things worth adding to the packing list…

  • High-factor sunscreen
  • Light cotton layers for the day
  • Light pants/trousers/skirt (for the cooler evenings and to cover the skin in areas where you need to dress more modestly)
  • Light jacket (for the evenings or for on boat trips)
  • Sunhat
  • Sunglasses
  • Swimwear
  • Light rain jacket
  • Flip-flops or sandals
  • Snorkel and mask

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

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Tonga Weather in July