September weather forecastMutalau, Niue

September

Weather in September

Hopping into September, a disparity is felt in Mutalau weather as temperatures escalate, albeit minimally, coinciding with the rise in rainfall levels to 52mm (2.05"). Ever-present trade winds whisper tales of transitional weather as the island prepares for the yen of rainfall. The climate remains as inviting as ever, the balance between rain and sunshine maintaining the idyllic charm of the town. The days begin to stretch again, bidding farewell to shrinkage in daylight observed in the previous months. September marks the subtle inception towards a more humid climate in Mutalau, a climate that is welcomed with open arms.

Temperature

On the advent of September, Mutalau's average high-temperature exhibits a minor adjustment to a still moderately hot 24.7°C (76.5°F) from August's 24.6°C (76.3°F). In Mutalau, the month of September records an average minimum temperature of 23.9°C (75°F), a slight dip from the daily highs.

Humidity

The months with the highest humidity are January, September and November, with an average relative humidity of 79%.

Rainfall

In Mutalau, during September, the rain falls for 17.9 days and regularly aggregates up to 52mm (2.05") of precipitation. Throughout the year, there are 229.1 rainfall days, and 1209mm (47.6") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 0min.
On the first day of the month, sunrise is at 06:26 and sunset at 18:11. On the last day of September, sunrise is at 06:00 and sunset at 18:17 -11.

Sunshine

The average sunshine in September is 6.7h.

UV index

The months with the lowest UV index are June through October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a regular UV index of 6 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

The high-temperature, in September, in Mutalau, records 24.7°C (76.5°F), while the low-temperature is 23.9°C (75°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in April is calculated to be 30°C (86°F).

The months with the highest humidity are January, September and November, with an average relative humidity of 79%.

In September, the average relative humidity is 79%.

In Mutalau, in September, during 17.9 rainfall days, 52mm (2.05") of precipitation is typically accumulated.

The average day length in September is 12h and 0min.

In September, on the first day of the month, sunrise is at 06:26 and sunset at 18:11. On the last day of the month, sunrise is at 06:00 and sunset at 18:17 -11.

The average sunshine duration in September is 6.7h.

June through October, with an average maximum UV index of 6, are months with the lowest UV index.

In Mutalau, 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mutalau, Niue

  • Average high temperature in September: 24.7°C

The warmest month (with the highest average high temperature) is March (28°C).
The month with the lowest average high temperature is August (24.6°C).

  • Average low temperature in September: 23.9°C

The month with the highest average low temperature is March (27.2°C).
The coldest month (with the lowest average low temperature) is August (23.4°C).

Average pressure in September
Mutalau, Niue

  • Average pressure in September: 1015.2mbar

The months with the highest atmospheric pressure are August and September (1015.2mbar).
The month with the lowest atmospheric pressure is January (1008.4mbar).

Average wind speed in September
Mutalau, Niue

  • Average wind speed in September: 25.4km/h

The windiest month (with the highest average wind speed) is June (27.2km/h).
The calmest month (with the lowest average wind speed) is March (19.8km/h).

Average humidity in September
Mutalau, Niue

  • Average humidity in September: 79%

The months with the highest relative humidity are January, September and November (79%).
The months with the lowest relative humidity are March, April, June, July and August (77%).

Average rainfall in September
Mutalau, Niue

  • Average rainfall in September: 52mm

The wettest month (with the highest rainfall) is January (202mm).
The driest month (with the least rainfall) is June (50mm).

Average rainfall days in September
Mutalau, Niue

  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is January (24.4 days).
The month with the least rainy days is November (14.8 days).

Average daylight in September /
Average sunshine in September
Mutalau, Niue

  • Average daylight in September: 12h and 0min

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

  • Average sunshine in September: 6h and 42min

The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).

Average sunshine days in September
Mutalau, Niue

  • Average sunshine days in September: 5.5 days

The month with the most sunshine days is November (13 days).
The month with the least sunshine days is February (2.9 days).

Average UV index in September
Mutalau, Niue

  • Average UV index in September: 6

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

Average cloud cover in September
Mutalau, Niue

  • Average cloud cover in September: 52

The months with the most cloud cover are August and November (Cloud cover 55).
The month with the least cloud cover is March (Cloud cover 47).

Average visibility in September
Mutalau, Niue

  • Average visibility in September: 10km

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