September weather forecast
Chuuk, Micronesia

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.