Weather in Guanacaste Region, Costa Rica in September

So you're interested in going to Guanacaste Region, Costa Rica in September

September is a hot and rainy time for sunbathing in Guanacaste Region. September is a good month for swimming in Guanacaste Region with warm sea temperatures. Consider visiting Guanacaste Region in the months of January, February, March, December, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Guanacaste Region in September

The average maximum temperature in Guanacaste Region in September is 31°. The average maximum temperature is 32° in the previous month and 30° in the next month.

The average temperature in Guanacaste Region in September is 27°. The average temperature ranges is 27° in the previous month and 26° in the next month.

The average minimum temperature in Guanacaste Region in September is 23°. The minimum temperature is 23° in the previous month and 23° in the next month.

Sunshine in Guanacaste Region in September

The average day light hours per day in Guanacaste Region in September are 12.2 and there are 5.2 hours of sunshine per day on average during September making it a sunny month that is overcast at times.

The ultraviolet index in Guanacaste Region in September is typically 13.6 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.

Sea Temperature in Guanacaste Region in September

The average sea water temperature in Guanacaste Region in September is 23.6° which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in Guanacaste Region in September

The average total rainfall in Guanacaste Region in September is 21.9cm and on average there are 19.4 rainy days in September making it a wet time to visit the beach.

Humidity in Guanacaste Region in September

The maximum dew point (an indicator of humidity) in Guanacaste Region in September is 25° 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 24° in the previous month and 24° in the next month.

The average maximum relative humidity in Guanacaste Region in September is typically 95.8%. The maximum relative humidity is 94% in the previous month and 96.2% in the next month.

The average relative humidity in Guanacaste Region in September is typically 79.7%. The average relative humidity is 75.4% in the previous month and 81.3% in the next month.

Wind Speed in Guanacaste Region in September

The average maximum wind speed in Guanacaste Region in September is typically 19kmh. The average maximum wind speed is 21kmh in the previous month and 17kmh in the next month.

The average wind speed in Guanacaste Region in September is typically 7kmh. The average wind speed is 8kmh in the previous month and 7kmh in the next month.

The average wind direction in Guanacaste Region in September is from the South-Southwest.

Monthly Averages

Suggested Beaches in September

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