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September is very hot, and sunny but overcast at times with long bright days. September is very rainy with frequent showers and thunderstorms and very few dry days. It is not an optimal time for sunbathing but it is possible on clearer days in Guam. September is an excellent month for swimming in Guam with very warm sea temperatures. Consider visiting Guam in the months of February, March, April, May, for the best beach weather.
Also consider one of our other suggestions for September.
Yes, September is not an optimal time for sunbathing but it is possible on clearer days in Guam. September is very hot with lots of sunshine but some overcast and cloudy skies, still great for sunbathing, and there is very high chance of rain showers.
The average maximum temperature in Guam in September is 30°C (87°F).
More about September temperature and sunshine.
Yes, September is an excellent month for swimming in Guam with very warm sea temperatures 29°C (85°F).
More about September sea temperatures.
Yes, September is a good time for a holiday in Guam.
September is very hot and sunny but overcast at times with long bright days. It is very rainy with frequent showers and thunderstorms and very few dry days.
It's a pretty rainy month, however on the days with out rain it's perfect for laying on the beach and enjoying the sunshine.
The average maximum temperature in Guam in September is 30°C (87°F).
More about the September temperatures and sunshine.
The average minimum temperature in Guam in September is 25°C (77°F). The minimum temperature is 25°C (76°F) in the previous month and 25°C (77°F) in the next month.
More about the September temperatures and sunshine.
The average day light hours per day in Guam in September are 12.2 and there are 8.5 hours of sunshine per day on average during September, making it sunny but overcast at times with long bright days.
More about September sunshine.
Yes, September is an excellent month for swimming in Guam with very warm sea temperatures 29°C (85°F).
More about September sea temperatures.
Yes, Guam is very hot in September.
The average maximum temperature in Guam in September is 30°C (87°F). The average maximum temperature is 30°C (86°) in the previous month and 30°C (86°F) in the next month.
The average temperature in Guam in September is 28°C (82°F). The average temperature ranges is 27°C (81°F) in the previous month and 28°C (82°F) in the next month.
More info about the September temperatures and sunshine.
The average maximum temperature in Guam in September is 30°C (87°F). The average maximum temperature is 30°C (86°F) in the previous month and 30°C (86°F) in the next month.
The average temperature in Guam in September is 28°C (82°F). The average temperature ranges is 27°C (81°F) in the previous month and 28°C (82°F) in the next month.
The average minimum temperature in Guam in September is 25°C (77°F). The minimum temperature is 25°C (76°F) in the previous month and 25°C (77°F) in the next month.
The average day light hours per day in Guam in September are 12.2 and there are 8.5 hours of sunshine per day on average during September making it sunny but overcast at times with long bright days
The ultraviolet index in Guam in September is typically 13.7 during September. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Guam in September is 29.3°C (84.7°F) which is very warm and ideal for relaxing and swimming for the whole day.
The average total rainfall in Guam in September is 30.3cm (11.9inches) and on average there are 28.1 rainy days in September making it a very wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Guam in September is 26°C (78°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning. The dew point is 25°C (78°F) in the previous month and 25°C (25°F) in the next month.
The average maximum relative humidity in Guam in September is typically 94.8%. The maximum relative humidity is 94.9% in the previous month and 94.1% in the next month.
The average relative humidity in Guam in September is typically 83.9%. The average relative humidity is 83.9% in the previous month and 83.8% in the next month.
The average maximum wind speed in Guam in September is typically 23KM/H (14MPH). The average maximum wind speed is 23KM/H (14MPH) in the previous month and 24KM/H (15MPH) in the next month.
The average wind speed in Guam in September is typically 10KM/H (6MPH). The average wind speed is 10KM/H (6MPH) in the previous month and 11KM/H (7MPH) in the next month.
The average wind direction in Guam in September is from the East-Southeast.
