Climate and monthly weather forecastVaini, Tonga
Climate and monthly weather forecast
The climate of Vaini
Vaini, Tonga is subject to a tropical rainforest climate according to the Köppen climate classification system. With high average temperatures and consistent humidity throughout the year, it is a location characterized by a warm and moist atmosphere. Positioned in the South Pacific, its equatorial location contributes to the near steady conditions in terms of daylight hours which range from 10.9 hours to a peak of 13.4 hours over the year.Month-by-month records indicate temperature highs fluctuating narrowly from 22.9°C (73.2°F) to 27.5°C (81.5°F), and temperature lows remaining similarly stable, spanning from 21.6°C (70.9°F) to 26.7°C (80.1°F). The relative humidity shows a minimal fluctuation, hovering around 77% to 80% annually.
Notably, Vaini receives significant rainfall throughout the year, varying from a maximum of 163mm (6.42") in February to a low point of 36mm (1.42") in October. The year brings between 124mm (4.88") and 163mm (6.42") of rain each month, along with a range of rainfall days from 12.9 to 22.7. The prevailing high pressure stays within a tight range of 1008.6mb to 1016.2mb.
The best time to visit Vaini
Vaini can provide an enjoyable experience for tourists throughout most of the year. However, given the rainfall pattern and the relative humidity, it could be argued that the best time to visit is during the local autumn season, specifically in October. October records the least amount of rainfall in the year, amounting to only 36mm (1.42") along with the fewest rainfall days, at 12.9 days. Temperatures during this time remain comfortable with a high of 23.7°C (74.7°F) and a low of 22.9°C (73.2°F).The worst time to visit Vaini
Conversely, the season with the highest rainfall and relatively high humidity may be less appealing to some visitors. February seems to be that time, with the rainfall peaking at 163mm (6.42") and having 22.7 rainy days on average. Despite these conditions, it's worth noting the average temperature remains at a high of 27.5°C (81.5°F) and a low of 26.7°C (80.1°F).Spring weather in Vaini
Moving into the spring season, Vaini experiences a steady increase in temperature with averages rising from 22.9°C (73.2°F) in September to a comfortable 25.2°C (77.4°F) in November. Rainfall varies within this period, but November sees slightly less rain with a total of 39mm (1.54") as compared to September's 64mm (2.52"). Wind speed remains almost stable in spring, starting at 23.7km/h (14.7mph) in September and closing the season at an average of 25.5km/h (15.8mph) by November.Summer weather in Vaini
Summer days in Vaini showcase the warmest temperatures of the year. December brings in highs of 25.6°C (78.1°F), reaching the peak of 27.5°C (81.5°F) in February. Coinciding with this rise in temperature is a rise in the volume of rainfall - from 75mm (2.95") in December to a peak of 163mm (6.42") in February. Summer is also marked by consistent wind speed, maintaining an average of around 24km/h (14.9mph) throughout the season.Autumn weather in Vaini
In Autumn, temperatures in Vaini start to decline slightly, from a high of 27.2°C (81°F) in March to a lower 23.7°C (74.7°F) by May. Rainfall also sees a significant reduction in this period, from 151mm (5.94") in March down to just 59mm (2.32") in May. Similar to the preceding seasons, wind speed stays fairly consistent with only slight variations, with averages ranging from 25.6km/h (15.9mph) to 25.5km/h (15.8mph).Winter weather in Vaini
Winter in Vaini offers relatively consistent weather conditions. June starts with a high temperature of 24.3°C (75.7°F) and it decreases slowly to reach 23°C (73.4°F) by August. Rainfall fluctuates marginally across the season, with June receiving 71mm (2.8") and August witnessing a dip to 51mm (2.01"). The wind speed experiences a slight decline from June's 25.4km/h (15.8mph) to August's 24.6km/h (15.3mph).Weather in January
The year starts with a distinctively humid period in Vaini, Tonga. Winds blowing at 24.2km/h (15mph) help to disseminate the heat, while an average pressure of 1008.6mb reins. A characteristic humid tropical weather sets the stage for the overall climate in this month. Weather in January »Weather in February
As the year progresses to February, slight fluctuations in temperature come into play. Vivid sunshine hours extend to 7.5 hours, accompanied by moderate winds peaking at 25.2km/h (15.7mph). February ushers in a predominately tropical environment, urging residents and visitors to prepare for cabins between intense heat and cooling winds. Weather in February »Weather in March
The first month of the autumn, March, is also a moderately hot month in Vaini, Tonga, with an average temperature fluctuating between 26.3°C (79.3°F) and 27.2°C (81°F). Vaini marks the onset of March with an average high-temperature of a still warm 27.2°C (81°F), a subtle shift from February's 27.5°C (81.5°F). Weather in March »Weather in April
Come April, there is a noticeable decrease in rainfall to 86mm (3.39"), signifying a shift towards a drier climate. Residents relish under the considerably long daylight hours, soaking up the invigorating warmth of the town's pleasant weather. Weather in April »Weather in May
May leads the charge into the mid-year, with significant dips in temperature ranges. The 7.4 hours of sunshine linger, casting a warm glow over the city despite the falling mercury levels. A sense of tranquility spreads, as cooler currents of wind carry light whispers of the sea. Weather in May »Weather in June
The spirit of mid-year festivities find a fitting backdrop in June's weather. Perhaps, the most noteworthy feature of this month is the lowest temperature to dip to 21.9°C (71.4°F). The cloud coverage stands tall at 49%, painting the skies with vibrant hues at sunrise and sunset. Weather in June »Weather in July
July sees a balancing act in Vaini weather with a steady average pressure of 1015.9mb. The sun playfully peeks out for close to 7 hours, adding to the tropical allure. This month sees consistent weather patterns strongly reminiscent of typical island climate, providing a serene ambiance and perfect conditions for relaxing. The transition into July marks the average high-temperature at a still moderately hot 23.2°C (73.8°F), differing minimally from June's 24.3°C (75.7°F). Weather in July »Weather in August
August sails in with substantial stability in temperature readings. Characterized by a mild wind speed reaching 25.5km/h (15.8mph) maximum, it keeps the tropical sensation alive. Cool breezes pepper the tropical sun, whilst the average pressure remains steady at 1016.2mb. The advent of August in Vaini denotes an average high-temperature of a still warm 23°C (73.4°F), subtly different from July's 23.2°C (73.8°F). Weather in August »Weather in September
September ushers the final journey through the tropical paradise of Vaini. Despite the balancing act between day and night temperatures, an increase to 7 hours of sunshine is observed. Celebrations commence under the 50% cloud coverage providing a soothing atmosphere for outdoor activities. September is the coldest month, with an average high-temperature of 22.9°C (73.2°F) and an average low-temperature of 21.7°C (71.1°F). Weather in September »Weather in October
The winds of October sing tunes of seasonal transitions, with notable weather trends in Vaini. Though the rainfall dials back to 36mm (1.42"), the city experiences a steady climate. Locals relish this spell of stable weather, marking a beautiful landscape under the sky laden with half clouds. The advent of October brings an average high-temperature of a moderately hot 23.7°C (74.7°F), exhibiting minor difference from the previous month. Weather in October »Weather in November
As Vaini marches into November, the tropical paradise flourishes under the slightly increasing sunlight of 8.9 hours. The weather patterns are familiar, with temperatures mildly oscillating and wind speeds steady at 24.1km/h (15mph). Weather in November »Weather in December
Closing the year, December in Vaini witnesses a sight of delightful weather. At the peak value of the year, a maximum wind speed of 25.8km/h (16mph) is recorded. With temperature ranges remaining reasonably stable with a moderate visibility of 10km (6.2mi), the year winds down reflecting Vaini’s signature tropical weather. Weather in December »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the most humid month, with an average relative humidity of 80%.
Throughout the year, in Vaini, there are 193.9 rainfall days, and 991mm (39.02") of precipitation is accumulated.
January through March, with an average maximum UV index of 7, are months with the highest UV index.
Vaini's temperature records reveal February as the warmest month, marked by average highs of 27.5°C (81.5°F) and lows of 26.7°C (80.1°F).
February is the month with the most rainfall in Vaini, Tonga. Rain falls for 22.7 days and accumulates 163mm (6.42") of precipitation.
The months with the lowest UV index in Vaini, Tonga, are April through December, with an average maximum UV index of 6.
June has the shortest days of the year, with an average of 10h and 54min of daylight.
The months with the lowest humidity in Vaini are July and August, with an average relative humidity of 75%.
The month with the least sunshine in Vaini is August, with an average of 6.8h of sunshine.
With its average high temperature of 22.9°C (73.2°F) and a low of 21.7°C (71.1°F), September is regarded as the coldest month in Vaini.
The month with the least rainfall in Vaini is October, when the rain falls for 12.9 days and typically collects 36mm (1.42") of precipitation.
November has the most sunshine of the year, with an average of 8.9h of sunshine.
The month with the longest days in Vaini, Tonga, is December, with an average of 13h and 24min of daylight.
Vaini, Tonga, does not utilize Daylight Saving Time (DST). +13 timezone is used over the entire year.
Average temperature
Vaini, Tonga
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).
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
Vaini, Tonga
- Average pressure in January:
1008.6mbar - Average pressure in February:
1008.6mbar - Average pressure in March:
1010.8mbar - Average pressure in April:
1012.6mbar - Average pressure in May:
1014.2mbar - Average pressure in June:
1015.8mbar
- Average pressure in July:
1015.9mbar - Average pressure in August:
1016.2mbar - Average pressure in September:
1016.2mbar - Average pressure in October:
1015.1mbar - Average pressure in November:
1012.9mbar - Average pressure in December:
1011mbar
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
Vaini, Tonga
- Average wind speed in January:
23.3km/h - Average wind speed in February:
24.1km/h - Average wind speed in March:
23.6km/h - Average wind speed in April:
24.2km/h - Average wind speed in May:
25.5km/h - Average wind speed in June:
25.4km/h
- Average wind speed in July:
25.6km/h - Average wind speed in August:
24.6km/h - Average wind speed in September:
23.7km/h - Average wind speed in October:
23.8km/h - Average wind speed in November:
24.1km/h - Average wind speed in December:
24.9km/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
Vaini, Tonga
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall
Vaini, Tonga
- Average rainfall in January:
124mm - Average rainfall in February:
163mm - Average rainfall in March:
151mm - Average rainfall in April:
86mm - Average rainfall in May:
59mm - Average rainfall in June:
71mm
The wettest month (with the highest rainfall) is February (163mm).
The driest month (with the least rainfall) is October (36mm).
Average rainfall days
Vaini, Tonga
- Average rainfall days in January:
22.3 days - Average rainfall days in February:
22.7 days - Average rainfall days in March:
21.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
13 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
14 days - Average rainfall days in October:
12.9 days - Average rainfall days in November:
13.1 days - Average rainfall days in December:
16.5 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 / Average sunshine
Vaini, Tonga
- Average daylight in January:
13h and 12min - Average daylight in February:
12h and 48min - Average daylight in March:
12h and 12min - Average daylight in April:
11h and 36min - Average daylight in May:
11h and 6min - Average daylight in June:
10h and 54min
- Average daylight in July:
11h and 0min - Average daylight in August:
11h and 24min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 36min - Average daylight in November:
13h and 6min - Average daylight in December:
13h and 24min
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 January:
7h and 0min - Average sunshine in February:
7h and 30min - Average sunshine in March:
7h and 24min - Average sunshine in April:
7h and 18min - Average sunshine in May:
7h and 24min - Average sunshine in June:
7h and 6min
- Average sunshine in July:
7h and 0min - Average sunshine in August:
6h and 48min - Average sunshine in September:
7h and 0min - Average sunshine in October:
7h and 6min - Average sunshine in November:
8h and 54min - Average sunshine in December:
8h and 36min
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
Vaini, Tonga
- Average sunshine days in January:
4.8 days - Average sunshine days in February:
3.8 days - Average sunshine days in March:
5.9 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
10.1 days - Average sunshine days in September:
10.8 days - Average sunshine days in October:
13 days - Average sunshine days in November:
10.9 days - Average sunshine days in December:
9.5 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
Vaini, Tonga
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
Vaini, Tonga
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
Vaini, Tonga
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).
