September weather forecastKoror, Palau
September
Weather in September
September sees a slight escalation in heat with high temperatures rising back to 28.8°C (83.8°F), mildly higher than August's 28.7°C (83.7°F). The month marks the close of summer, with Koror remaining resilient despite the fluctuating weather patterns typical of this time frame. Despite an increase in wind speed, September showcases one of the lower visibility levels of the year at 9 km. As tropical storm activity tends to peak during this period, the city witnesses spectacular atmospheric events. Ultimately, September in Koror delights with a captivating display of tropical weather elements.Temperature
The advent of September in Koror brings an average high-temperature of a still moderately hot 28.8°C (83.8°F), almost identical to the preceding month. Koror's average temperature during the nights of September is recorded at a still warm 28°C (82.4°F).Heat index
The heat index value for September is computed to be a hot 33°C (91.4°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in September in Koror is 76%.Rainfall
In Koror, Palau, during September, the rain falls for 23.4 days and regularly aggregates up to 182mm (7.17") of precipitation. In Koror, during the entire year, the rain falls for 303.8 days and collects up to 2074mm (81.65") of precipitation.Sea temperature
April through December, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Koror, Palau.Note: 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.
Daylight
In Koror, the average length of the day in September is 12h and 10min.On the first day of September in Koror, Palau, sunrise is at 05:54 and sunset at 18:09. On the last day of the month, sunrise is at 05:50 and sunset at 17:53 +09.
Sunshine
In September, the average sunshine in Koror is 8.5h.UV index
January, September and November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Alert! Sand and water increase UV exposure due to their reflective properties.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Koror, Palau
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is May (29.3°C).
The months with the lowest average high temperature are February and March (28.3°C).
- Average low temperature in September: 28°C
The month with the highest average low temperature is November (28.4°C).
The coldest month (with the lowest average low temperature) is February (27.5°C).
Average pressure in September
Koror, Palau
- Average pressure in September: 1009mbar
The months with the highest atmospheric pressure are February and March (1009.6mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Koror, Palau
- Average wind speed in September: 19.6km/h
The windiest month (with the highest average wind speed) is February (24.5km/h).
The calmest month (with the lowest average wind speed) is June (13.5km/h).
Average humidity in September
Koror, Palau
- Average humidity in September: 76%
The months with the highest relative humidity are January, February, March and April (78%).
The month with the lowest relative humidity is June (75%).
Average rainfall in September
Koror, Palau
- Average rainfall in September: 182mm
The wettest month (with the highest rainfall) is June (209mm).
The driest month (with the least rainfall) is March (119mm).
Average rainfall days in September
Koror, Palau
- Average rainfall days in September: 23.4 days
The months with the highest number of rainy days are January and December (27.8 days).
The month with the least rainy days is September (23.4 days).
Average sea temperature in September
Koror, Palau
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are April, May, June, July, August, September, October, November and December (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (28°C).
Average daylight in September /
Average sunshine in September
Koror, Palau
- Average daylight in September: 12h and 12min
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: 8h and 30min
The month with the most sunshine is May (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Koror, Palau
- Average sunshine days in September: 5.7 days
The month with the most sunshine days is August (5.9 days).
The months with the least sunshine days are February and December (1.6 days).
Average UV index in September
Koror, Palau
- Average UV index in September: 6
The months with the highest UV index are February, March, April, May, June, July, August, October and December (UV index 7).
The months with the lowest UV index are January, September and November (UV index 6).
Average cloud cover in September
Koror, Palau
- Average cloud cover in September: 48
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 43).
Average visibility in September
Koror, Palau
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, October and December (10km).
The months with the lowest visibility are September and November (9km).
