Also consider one of our other suggestions for September.
The average maximum temperature in Portimao in September is 26°. The average maximum temperature is 29° in the previous month and 24° in the next month.
The average temperature in Portimao in September is 22°. The average temperature ranges is 25° in the previous month and 20° in the next month.
The average minimum temperature in Portimao in September is 19°. The minimum temperature is 20° in the previous month and 16° in the next month.
The average day light hours per day in Portimao in September are 12.4 and there are 8.5 hours of sunshine per day on average during September making it a sunny month with few clouds.
The ultraviolet index in Portimao in September is typically 7.5 during September. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. 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 Portimao in September is 20.7° which is comfortable for swimming though some may prefer warmer water.
The average total rainfall in Portimao in September is 0.3cm and on average there are 3.3 rainy days in September making it a very dry time to visit the beach.
The maximum dew point (an indicator of humidity) in Portimao in September is 20° which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 20° in the previous month and 18° in the next month.
The average maximum relative humidity in Portimao in September is typically 88.5%. The maximum relative humidity is 82.9% in the previous month and 91.8% in the next month.
The average relative humidity in Portimao in September is typically 70.8%. The average relative humidity is 62.1% in the previous month and 75.3% in the next month.
The average maximum wind speed in Portimao in September is typically 24kmh. The average maximum wind speed is 25kmh in the previous month and 25kmh in the next month.
The average wind speed in Portimao in September is typically 12kmh. The average wind speed is 12kmh in the previous month and 12kmh in the next month.
The average wind direction in Portimao in September is from the West.
