September weather forecast
Namatanai, Papua New Guinea

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Weather in September

September ushers in slightly warmer temperatures, oscillating from 25.1°C (77.2°F) to 28.7°C (83.7°F). The weather profile remains consistent, fostering an array of outdoor activities and sightseeing opportunities. Rainfall continues to decrease, bestowing the month with more dry days. Namatanai receives 109mm (4.29") of rainfall during this month, strewn over 24.4 days.

Temperature

September's presence marks an average high-temperature of a still warm 28.7°C (83.7°F), subtly varied from August's 28.6°C (83.5°F). Namatanai consistently logs a low temperature averaging a still moderately hot 25.1°C (77.2°F) during September, a modest drop from daytime temperatures.

Heat index

For September, the heat index is computed to be a hot 34°C (93.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index details are generally centered around shaded locations and a mild breeze. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

The average relative humidity in September is 79%.

Rainfall

September is the month with the least rainfall. Rain falls for 24.4 days and accumulates 109mm (4.29") of precipitation.

Sea temperature

In Namatanai, the average seawater temperature in September is 29.4°C (84.9°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In September, the average length of the day in Namatanai is 12h and 5min.
On the first day of the month, sunrise is at 05:49 and sunset at 17:51. On the last day of September, sunrise is at 05:36 and sunset at 17:44 +10.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The months with the highest UV index are January through March, May through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 7 during September leads to these advisories:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Watch out! Reflections from sand and water can surge UV radiation exposure.

Frequently asked questions

How hot is it in September?

In Namatanai, 28.7°C (83.7°F) is the average high-temperature and 25.1°C (77.2°F) is the average low-temperature during September. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 34°C (93.2°F).

What is the average humidity in September?

In September, the average relative humidity is 79%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 24.4 days and accumulates 109mm (4.29") of precipitation.

How much does it rain in Namatanai in September?

In Namatanai, in September, during 24.4 rainfall days, 109mm (4.29") of precipitation is typically accumulated.

What is the sea water temperature in September?

In Namatanai, in September, the average water temperature is 29.4°C (84.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Namatanai have in September?

In September, the average day length is 12h and 5min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 05:49 and sunset at 17:51. On the last day of the month, sunrise is at 05:36 and sunset at 17:44 +10.

How many hours of sunshine does Namatanai have in September?

In September, the average sunshine duration is 8.6h.

When is the highest UV index?

January through March, May through December, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Average temperature in September
Namatanai, Papua New Guinea

Average temperature in September - Namatanai, Papua New Guinea
  • Average high temperature in September: 28.7°C

The warmest month (with the highest average high temperature) is May (29.3°C).
The month with the lowest average high temperature is July (28.4°C).

  • Average low temperature in September: 25.1°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is September (25.1°C).

Average pressure in September
Namatanai, Papua New Guinea

Average pressure in September - Namatanai, Papua New Guinea
  • Average pressure in September: 1010mbar

The months with the highest atmospheric pressure are August and September (1010mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).

Average wind speed in September
Namatanai, Papua New Guinea

Average wind speed in September - Namatanai, Papua New Guinea
  • Average wind speed in September: 11.5km/h

The windiest month (with the highest average wind speed) is August (13.6km/h).
The calmest month (with the lowest average wind speed) is April (7.5km/h).

Average humidity in September
Namatanai, Papua New Guinea

Average humidity in September - Namatanai, Papua New Guinea
  • Average humidity in September: 79%

The month with the highest relative humidity is July (80%).
The months with the lowest relative humidity are October and November (77%).

Average rainfall in September
Namatanai, Papua New Guinea

Average rainfall in September - Namatanai, Papua New Guinea
  • Average rainfall in September: 109mm

The wettest month (with the highest rainfall) is March (226mm).
The driest month (with the least rainfall) is September (109mm).

Average rainfall days in September
Namatanai, Papua New Guinea

Average rainfall days in September - Namatanai, Papua New Guinea
  • Average rainfall days in September: 24.4 days

The month with the highest number of rainy days is March (27.9 days).
The month with the least rainy days is September (24.4 days).

Average sea temperature in September
Namatanai, Papua New Guinea

Average sea temperature in September - Namatanai, Papua New Guinea
  • Average sea temperature in September: 29.4°C

The best months for swimming (with the highest average sea temperature) are November and December (30.3°C).
The coldest month (with the lowest average sea temperature) is August (29.2°C).

Average daylight in September /
Average sunshine in September
Namatanai, Papua New Guinea

Average daylight in September / Average sunshine in September - Namatanai, Papua New Guinea
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).

  • Average sunshine in September: 8h and 4min

The months with the most sunshine are January and February (Average sunshine: 9h and 42min).
The month with the least sunshine is July (Average sunshine: 6h and 36min).

Average sunshine days in September
Namatanai, Papua New Guinea

Average sunshine days in September - Namatanai, Papua New Guinea
  • Average sunshine days in September: 4.3 days

The month with the most sunshine days is October (4.4 days).
The month with the least sunshine days is April (1.6 days).

Average UV index in September
Namatanai, Papua New Guinea

Average UV index in September - Namatanai, Papua New Guinea
  • Average UV index in September: 7

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

Average cloud cover in September
Namatanai, Papua New Guinea

Average cloud cover in September - Namatanai, Papua New Guinea
  • Average cloud cover in September: 36

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are May, September, October and November (Cloud cover 36).

Average visibility in September
Namatanai, Papua New Guinea

Average visibility in September - Namatanai, Papua New Guinea
  • Average visibility in September: 10km

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

Namatanai, Papua New Guinea

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