Weather in Sumatra, Indonesia in July

So you're interested in going to Sumatra, Indonesia in July

July is a hot and rainy time for sunbathing in Sumatra. July is an excellent month for swimming in Sumatra with very warm sea temperatures. Consider visiting Sumatra in the months of February, March, August, September, for the best beach weather. Also consider one of our other suggestions for July.

Temperature in Sumatra in July

The average maximum temperature in Sumatra in July is 31°. The average maximum temperature is 32° in the previous month and 32° in the next month.

The average temperature in Sumatra in July is 27°. The average temperature ranges is 28° in the previous month and 27° in the next month.

The average minimum temperature in Sumatra in July is 23°. The minimum temperature is 23° in the previous month and 23° in the next month.

Sunshine in Sumatra in July

The average day light hours per day in Sumatra in July are 12 and there are 9 hours of sunshine per day on average during July making it a sunny month with few clouds.

The ultraviolet index in Sumatra in July is typically 11.7 during July. 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 Sumatra in July

The average sea water temperature in Sumatra in July is 28.9° which is very warm and ideal for relaxing and swimming for the whole day.

Rainfall in Sumatra in July

The average total rainfall in Sumatra in July is 15.3cm and on average there are 16.5 rainy days in July making it a wet time to visit the beach.

Humidity in Sumatra in July

The maximum dew point (an indicator of humidity) in Sumatra in July is 24° 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° in the previous month and 24° in the next month.

The average maximum relative humidity in Sumatra in July is typically 94.6%. The maximum relative humidity is 95.9% in the previous month and 92.7% in the next month.

The average relative humidity in Sumatra in July is typically 80.8%. The average relative humidity is 83% in the previous month and 75.1% in the next month.

Wind Speed in Sumatra in July

The average maximum wind speed in Sumatra in July is typically 26kmh. The average maximum wind speed is 25kmh in the previous month and 25kmh in the next month.

The average wind speed in Sumatra in July is typically 7kmh. The average wind speed is 6kmh in the previous month and 9kmh in the next month.

The average wind direction in Sumatra in July is from the North.

Monthly Averages

Suggested Beaches in July

Book Accomodation Deals