September weather forecast
Chuuk, Micronesia

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Weather in September

Progressing into the later phases of the year, September brings a minor decrease in temperatures in Chuuk, Micronesia. Still, the rainfall experiences a decline to 307mm (12.09") from the previous month's high. The frequency of the rainy days also decreases. Meanwhile, the sea temperature and daylight length maintain their steady pattern. Consequently, September in Chuq sees less rain with continued warmth, maintaining the overall comfortable weather character.

Temperature

Chuuk's warmest months, May, June, August through November, record an average high-temperature of 30.7°C (87.3°F).

Heat index

September's average heat index is estimated at a blisteringly hot 41°C (105.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In September, the average relative humidity in Chuuk is 83%.

Rainfall

In September, the rain falls for 18.6 days. Throughout September, 307mm (12.09") of precipitation is accumulated. Throughout the year, there are 218.8 rainfall days, and 3525mm (138.78") of precipitation is accumulated.

Sea temperature

January, March through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Chuuk.
Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:45 and sunset at 18:01. On the last day of September, sunrise is at 05:41 and sunset at 17:45 +10.

Sunshine

In Chuuk, the average sunshine in September is 5.9h.

UV index

January through October, with an average maximum UV index of 12, are months with the highest UV index in Chuuk. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 12 in September leads to these recommendations:
Enforce every key safety measure. Those with light skin might get burns in a matter of minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Following every swim or outdoor workout, a sunscreen with an SPF of not less than 30 should be liberally applied and re-applied frequently, even on overcast days. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
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Frequently asked questions

What time of the year is the hottest in Chuuk?

The yearly peak temperatures in Chuuk, Micronesia, occur in May, June, August through November, averaging a high-temperature of 30.7°C (87.3°F).

How hot does it get in Chuuk in September?

September temperatures in Chuuk, Micronesia, vary between a high-temperature of 30.7°C (87.3°F) and a low-temperature of 24.2°C (75.6°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 41°C (105.8°F).

What is the average humidity in September in Chuuk?

In Chuuk, Micronesia, the average relative humidity in September is 83%.

How many days does it rain in September in Chuuk?

In Chuuk, Micronesia, in September, during 18.6 rainfall days, 307mm (12.09") of precipitation is typically accumulated.

What are the months with the warmest sea water in Chuuk?

January, March through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Chuuk.

What is the water temperature in September in Chuuk?

In September, the average sea temperature in Chuuk, Micronesia, is 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Chuuk?

In Chuuk, the average day length in September is 12h and 10min.

When are sunrise and sunset in September in Chuuk?

On the first day of September in Chuuk, Micronesia, sunrise is at 05:45 and sunset at 18:01. On the last day of the month, sunrise is at 05:41 and sunset at 17:45 +10.

How many hours of sunshine does Chuuk have in September?

In Chuuk, the average sunshine duration in September is 5.9h.

What are the months with the highest UV index in Chuuk?

January through October, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index intensity in September in Chuuk?

The average daily maximum UV index in September is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Chuuk, Micronesia

Average temperature in September - Chuuk, Micronesia
  • Average high temperature in September: 30.7°C

The warmest months (with the highest average high temperature) are May, June, August, September, October and November (30.7°C).
The months with the lowest average high temperature are January and February (29.9°C).

  • Average low temperature in September: 24.2°C

The month with the highest average low temperature is March (25.1°C).
The coldest months (with the lowest average low temperature) are July, August and September (24.2°C).

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Average humidity in September
Chuuk, Micronesia

Average humidity in September - Chuuk, Micronesia
  • Average humidity in September: 83%

The month with the highest relative humidity is July (83.9%).
The month with the lowest relative humidity is February (77.7%).

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Average rainfall in September
Chuuk, Micronesia

Average rainfall in September - Chuuk, Micronesia
  • Average rainfall in September: 306.6mm

The wettest month (with the highest rainfall) is July (365mm).
The driest month (with the least rainfall) is February (163.1mm).

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Average rainfall days in September
Chuuk, Micronesia

Average rainfall days in September - Chuuk, Micronesia
  • Average rainfall days in September: 18.6 days

The month with the highest number of rainy days is May (21.2 days).
The month with the least rainy days is February (12.2 days).

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Average sea temperature in September
Chuuk, Micronesia

Average sea temperature in September - Chuuk, Micronesia
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are January, March, April, May, June, July, August, September, October, November and December (29°C).
The coldest month (with the lowest average sea temperature) is February (28°C).

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Average daylight in September /
Average sunshine in September
Chuuk, Micronesia

Average daylight in September / Average sunshine in September - Chuuk, Micronesia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in September: 5h and 5min

The month with the most sunshine is February (Average sunshine: 7h and 6min).
The month with the least sunshine is October (Average sunshine: 5h and 12min).

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Average UV index in September
Chuuk, Micronesia

Average UV index in September - Chuuk, Micronesia
  • Average UV index in September: 12

The months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 12).
The months with the lowest UV index are November and December (UV index 11).

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Chuuk, Micronesia

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