May weather forecastAfa, Tonga
May
Weather in May
May in Afa, Tonga brings a prominent shift in weather patterns as the summer months come to a close. With the decrease in temperature, May is distinguished by a more moderate climate compared to previous months. Rainfall reaches its lowest point, at 59mm (2.32"), signaling the onset of the dryer season. The wind gusts amplify, reaching a peak of 34.7km/h (21.6mph), delivering a consistent breeze throughout the month. This, coupled with the steady reduction in cloud cover, makes May an ideal time for wind-based water activities.Temperature
The transition into May shows a subtle variation to a still warm 25.2°C (77.4°F) from April's 26.2°C (79.2°F) in the average high-temperature. In Afa, May is characterized by an average low-temperature of 23.9°C (75°F), indicating a minor drop from daytime highs.Humidity
In May, the average relative humidity in Afa is 77%.Rainfall
In May, in Afa, the rain falls for 13 days. Throughout May, 59mm (2.32") of precipitation is accumulated. In Afa, Tonga, during the entire year, the rain falls for 193.9 days and collects up to 991mm (39.02") of precipitation.Daylight
The average length of the day in May is 11h and 6min.On the first day of the month, sunrise is at 06:57 and sunset at 18:16. On the last day of May, in Afa, sunrise is at 07:10 and sunset at 18:05 +13.
Sunshine
In May, the average sunshine in Afa is 7.4h.UV index
April through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In May, a regular UV index of 6 translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Afa, Tonga
- Average high temperature in May: 25.2°C
The warmest month (with the highest average high temperature) is February (27.5°C).
The month with the lowest average high temperature is September (22.9°C).
- Average low temperature in May: 23.9°C
The month with the highest average low temperature is February (26.7°C).
The coldest month (with the lowest average low temperature) is August (21.6°C).
Average pressure in May
Afa, Tonga
- Average pressure in May: 1014.2mbar
The months with the highest atmospheric pressure are August and September (1016.2mbar).
The months with the lowest atmospheric pressure are January and February (1008.6mbar).
Average wind speed in May
Afa, Tonga
- Average wind speed in May: 25.5km/h
The windiest month (with the highest average wind speed) is July (25.6km/h).
The calmest month (with the lowest average wind speed) is January (23.3km/h).
Average humidity in May
Afa, Tonga
- Average humidity in May: 77%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in May
Afa, Tonga
- Average rainfall in May: 59mm
The wettest month (with the highest rainfall) is February (163mm).
The driest month (with the least rainfall) is October (36mm).
Average rainfall days in May
Afa, Tonga
- Average rainfall days in May: 13 days
The month with the highest number of rainy days is February (22.7 days).
The month with the least rainy days is October (12.9 days).
Average daylight in May /
Average sunshine in May
Afa, Tonga
- Average daylight in May: 11h and 6min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in May: 7h and 24min
The month with the most sunshine is November (Average sunshine: 8h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 48min).
Average sunshine days in May
Afa, Tonga
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is February (3.8 days).
Average UV index in May
Afa, Tonga
- Average UV index in May: 6
The months with the highest UV index are January, February and March (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in May
Afa, Tonga
- Average cloud cover in May: 46
The month with the most cloud cover is August (Cloud cover 51).
The month with the least cloud cover is May (Cloud cover 46).
Average visibility in May
Afa, Tonga
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).








