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
September
Weather in September
Temperature
September's presence records an average high-temperature of a still warm 23.6°C (74.5°F), closely mirroring August's climate. Trafaria usually reports an average low-temperature of 18.2°C (64.8°F) during the month of September.Humidity
The average relative humidity in September is 73%.Rainfall
In Trafaria, during September, the rain falls for 4.9 days and regularly aggregates up to 10mm (0.39") of precipitation. Throughout the year, there are 85.8 rainfall days, and 215mm (8.46") of precipitation is accumulated.Sea temperature
The month with the warmest seawater is September, with an average sea temperature of 19.9°C (67.8°F).Note: The majority find it unenjoyable to swim in 19.9°C (67.8°F). Breathing becomes tougher as the water temperature descends under 21°C (69.8°F).
Daylight
In September, the average length of the day in Trafaria is 12h and 26min.On the first day of the month, sunrise is at 07:06 and sunset at 20:06. On the last day of September, in Trafaria, sunrise is at 07:32 and sunset at 19:21 WEST.
Sunshine
The average sunshine in September is 9.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Trafaria?
What is the average humidity in September in Trafaria?
How many days does it rain in September in Trafaria?
When is the sea warmest in Trafaria?
What is the sea temperature in September in Trafaria?
What is the average length of the day in September in Trafaria?
When are sunrise and sunset in September in Trafaria?
How long on average sun shines in September in Trafaria?
What is the month with the highest UV index in Trafaria?
What is the UV index reading in September in Trafaria?
Average temperature in September
Trafaria, Portugal
- Average high temperature in September: 23.6°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in September: 18.2°C
The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).
Average pressure in September
Trafaria, Portugal
- Average pressure in September: 1017mbar
The months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Trafaria, Portugal
- Average wind speed in September: 15.8km/h
The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is October (15.6km/h).
Average humidity in September
Trafaria, Portugal
- Average humidity in September: 73%
The months with the highest relative humidity are January, April, July and December (75%).
The months with the lowest relative humidity are May and October (72%).
Average rainfall in September
Trafaria, Portugal
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is November (44mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Trafaria, Portugal
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is November (12.4 days).
The month with the least rainy days is August (1.9 days).
Average sea temperature in September
Trafaria, 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
Trafaria, 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 24min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Trafaria, Portugal
- Average sunshine days in September: 24.5 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (15.6 days).
Average UV index in September
Trafaria, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Trafaria, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Trafaria, 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).
