September weather forecastEspinho, Portugal
September
Weather in September
September, the first month of the autumn in Espinho, is still a warm month, with an average temperature fluctuating between 14.6°C (58.3°F) and 24.9°C (76.8°F).Temperature
With the transition into September, Espinho notes an average high-temperature of a still moderately hot 24.9°C (76.8°F), closely resembling August. An average minimum temperature of 14.6°C (58.3°F) marks the month of September in Espinho.Humidity
The months with the lowest humidity in Espinho are August and September, with an average relative humidity of 67%.Rainfall
In Espinho, Portugal, during September, the rain falls for 5.6 days and regularly aggregates up to 26mm (1.02") of precipitation. In Espinho, during the entire year, the rain falls for 126.3 days and collects up to 725mm (28.54") of precipitation.Sea temperature
September is the month with the warmest seawater in Espinho, Portugal, with an average sea temperature of 18.2°C (64.8°F).Note: For most, swimming in 18.2°C (64.8°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.
Daylight
In Espinho, the average length of the day in September is 12h and 28min.On the first day of September in Espinho, Portugal, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, sunrise is at 07:30 and sunset at 19:18 WEST.
Sunshine
In Espinho, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Espinho, Portugal
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 14.6°C
The month with the highest average low temperature is August (15.5°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).
Average pressure in September
Espinho, Portugal
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Espinho, Portugal
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in September
Espinho, Portugal
- Average humidity in September: 67%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (67%).
Average rainfall in September
Espinho, Portugal
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (109mm).
The driest month (with the least rainfall) is July (7mm).
Average rainfall days in September
Espinho, Portugal
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is November (15 days).
The month with the least rainy days is August (3.8 days).
Average sea temperature in September
Espinho, Portugal
- Average sea temperature in September: 18.2°C
The best month for swimming (with the highest average sea temperature) is September (18.2°C).
The coldest months (with the lowest average sea temperature) are February and March (13.8°C).
Average daylight in September /
Average sunshine in September
Espinho, Portugal
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Espinho, Portugal
- Average sunshine days in September: 23.2 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (13.6 days).
Average UV index in September
Espinho, Portugal
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Espinho, Portugal
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Espinho, Portugal
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
