Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift into September records an average high-temperature of a still warm 25.7°C (78.3°F), subtly varied from August's 27.4°C (81.3°F). During September, São João da Talha sees a mean low-temperature of 17.1°C (62.8°F).Humidity
In September, the average relative humidity is 69%.Rainfall
In São João da Talha, in September, it is raining for 5.6 days, with typically 18mm (0.71") of accumulated precipitation. Throughout the year, there are 111.8 rainfall days, and 359mm (14.13") of precipitation is accumulated.Sea temperature
September is the month with the warmest seawater in São João da Talha, with an average sea temperature of 19.9°C (67.8°F).Note: For most people, a water temperature of 19.9°C (67.8°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
In São João da Talha, Portugal, the average length of the day in September is 12h and 26min.On the first day of September in São João da Talha, sunrise is at 07:05 and sunset at 20:06. On the last day of the month, sunrise is at 07:31 and sunset at 19:20 WEST.
Sunshine
The average sunshine in September is 9.4h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the average September temperature in São João da Talha?
What is the average humidity in September in São João da Talha?
How much does it rain in São João da Talha in September?
What is the month with the warmest sea water in São João da Talha?
What is the sea temperature in September in São João da Talha?
How many hours of daylight does São João da Talha have in September?
What time are sunrise and sunset in September in São João da Talha?
How many hours of sunshine does São João da Talha have in September?
What is the month with the highest UV index in São João da Talha?
How high is the UV index in September in São João da Talha?
Average temperature in September
São João da Talha, Portugal
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in September: 17.1°C
The month with the highest average low temperature is August (17.6°C).
The coldest month (with the lowest average low temperature) is February (9.4°C).
Average pressure in September
São João da Talha, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
São João da Talha, Portugal
- Average wind speed in September: 12.9km/h
The windiest months (with the highest average wind speed) are February and July (15.9km/h).
The calmest months (with the lowest average wind speed) are September and October (12.9km/h).
Average humidity in September
São João da Talha, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
São João da Talha, Portugal
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (61mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
São João da Talha, Portugal
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is November (14.1 days).
The month with the least rainy days is August (2.3 days).
Average sea temperature in September
São João da Talha, Portugal
- Average sea temperature in September: 19.9°C
The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in September /
Average sunshine in September
São João da Talha, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
São João da Talha, Portugal
- Average sunshine days in September: 23 days
The month with the most sunshine days is August (26.4 days).
The months with the least sunshine days are April and November (14.5 days).
Average UV index in September
São João da Talha, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
São João da Talha, Portugal
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
São João da Talha, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
São João da Talha, Portugal
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