September weather forecast
Port Olry, Vanuatu

September

Weather in September

Though September marks the end of summer globally, Port Olry continues to bask in warm temperatures. The weather remains consistently tropical with average high temperatures settling at 26.4°C (79.5°F). A noticeable change from August is the slight increase in rainfall. While the rainfall volume is minimal, the city sees an upsurge in the number of rainy days. Consistently high wind speeds continue to cut through the warmth, providing a refreshing contrast.

Temperature

Port Olry experiences a minor change to a still moderately hot 26.4°C (79.5°F) in average high-temperature during September, closely reflecting August. A steady low-temperature average of 23.2°C (73.8°F) is logged during September, reflecting a modest dip from daytime readings.

Humidity

January, September, November and December, with an average relative humidity of 80%, are the least humid months.

Rainfall

The month with the least rainfall is September, when the rain falls for 14 days and typically collects 38mm (1.5") of precipitation.

Daylight

In Port Olry, the average length of the day in September is 12h and 1min.
On the first day of September, sunrise is at 05:57 and sunset at 17:46. On the last day of the month, sunrise is at 05:35 and sunset at 17:48 +11.

Sunshine

The average sunshine in September is 7.7h.

UV index

January, May through October, 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 risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in September transforms into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What are the temperatures in September?
The average high-temperature, in September, in Port Olry, is 26.4°C (79.5°F), while the average low-temperature is 23.2°C (73.8°F). In May, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 31°C (87.8°F).
What are the least humid months?
January, September, November and December, with an average relative humidity of 80%, are the least humid months.
What is the average humidity in September?
The average relative humidity in September is 80%.
What is the driest month?
September is the month with the least rainfall. Rain falls for 14 days and accumulates 38mm (1.5") of precipitation.
How many days does it rain in September?
In Port Olry, in September, during 14 rainfall days, 38mm (1.5") of precipitation is typically accumulated.
How many hours of daylight does Port Olry have in September?
In Port Olry, Vanuatu, the average day length in September is 12h and 1min.
What time are sunrise and sunset in September in Port Olry?
On the first day of September, sunrise is at 05:57 and sunset at 17:46. On the last day of the month, sunrise is at 05:35 and sunset at 17:48 +11.
How many hours of sunshine does Port Olry have in September?
In Port Olry, the average sunshine duration in September is 7.7h.
What are the months with the lowest UV index?
The months with the lowest UV index are January, May through October, with an average maximum UV index of 6.
How high is the UV index in September?
In Port Olry, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Port Olry, Vanuatu
  • Average high temperature in September: 26.4°C

The warmest month (with the highest average high temperature) is March (28.9°C).
The month with the lowest average high temperature is July (25.9°C).

  • Average low temperature in September: 23.2°C

The months with the highest average low temperature are February and March (25.2°C).
The coldest month (with the lowest average low temperature) is August (22.3°C).

Average pressure in September
Port Olry, Vanuatu
  • Average pressure in September: 1012.9mbar

The month with the highest atmospheric pressure is August (1013.1mbar).
The month with the lowest atmospheric pressure is February (1006.3mbar).

Average wind speed in September
Port Olry, Vanuatu
  • Average wind speed in September: 15.2km/h

The windiest month (with the highest average wind speed) is July (15.9km/h).
The calmest month (with the lowest average wind speed) is January (10.4km/h).

Average humidity in September
Port Olry, Vanuatu
  • Average humidity in September: 80%

The month with the highest relative humidity is June (83%).
The months with the lowest relative humidity are January, September, November and December (80%).

Average rainfall in September
Port Olry, Vanuatu
  • Average rainfall in September: 38mm

The wettest month (with the highest rainfall) is February (213mm).
The driest month (with the least rainfall) is September (38mm).

Average rainfall days in September
Port Olry, Vanuatu
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is March (26.1 days).
The month with the least rainy days is August (13.7 days).

Average daylight in September /
Average sunshine in September
Port Olry, Vanuatu
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).

  • Average sunshine in September: 7h and 4min

The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is July (Average sunshine: 5h and 36min).

Average sunshine days in September
Port Olry, Vanuatu
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is August (12.4 days).
The month with the least sunshine days is March (3.6 days).

Average UV index in September
Port Olry, Vanuatu
  • Average UV index in September: 6

The months with the highest UV index are February, March, April, November and December (UV index 7).
The months with the lowest UV index are January, May, June, July, August, September and October (UV index 6).

Average cloud cover in September
Port Olry, Vanuatu
  • Average cloud cover in September: 43

The months with the most cloud cover are June, July and October (Cloud cover 45).
The month with the least cloud cover is December (Cloud cover 40).

Average visibility in September
Port Olry, Vanuatu
  • Average visibility in September: 10km

The months with the highest visibility are February, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and March (9km).

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