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
With the advent of September, Alcantarilha's high-temperatures adjust to a still warm 25°C (77°F), closely aligning with the preceding month. During September, Alcantarilha's temperature averages to a refreshing 18.8°C (65.8°F) at night.Humidity
The average relative humidity in September is 68%.Rainfall
Months with rainfall are January through June, September through December. September is the first month it rains in Alcantarilha. Throughout September, in the average 1.9 rainfall days, it receives 1mm (0.04") of precipitation. Throughout the year, there are 47.6 rainfall days, and 51mm (2.01") of precipitation is accumulated.Sea temperature
August and September, with an average sea temperature of 21°C (69.8°F), are months with the warmest seawater in Alcantarilha.Note: In water of 21°C (69.8°F), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Alcantarilha, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 07:04 and sunset at 20:01. On the last day of the month, sunrise is at 07:28 and sunset at 19:18 WEST.
Sunshine
The average sunshine in September is 9.6h.UV index
The months with the highest UV index in Alcantarilha are May through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Alcantarilha in September?
What is the average humidity in September in Alcantarilha?
When does it start raining in Alcantarilha?
What months are the sea warmest in Alcantarilha?
How cold is the water in September in Alcantarilha?
What is the average length of the day in September in Alcantarilha?
What time are sunrise and sunset in September in Alcantarilha?
How many hours of sunshine does Alcantarilha have in September?
What are the months with the highest UV index in Alcantarilha?
How high is the UV index in September in Alcantarilha?
Average temperature in September
Alcantarilha, Portugal
- Average high temperature in September: 25°C
The warmest month (with the highest average high temperature) is August (27.5°C).
The month with the lowest average high temperature is January (15.1°C).
- Average low temperature in September: 18.8°C
The month with the highest average low temperature is August (19.4°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in September
Alcantarilha, Portugal
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Alcantarilha, Portugal
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest month (with the lowest average wind speed) is September (12.5km/h).
Average humidity in September
Alcantarilha, Portugal
- Average humidity in September: 68%
The months with the highest relative humidity are January, March, April and December (75%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Alcantarilha, Portugal
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is November (10mm).
The driest months (with the least rainfall) are July and August (0mm).
Average rainfall days in September
Alcantarilha, Portugal
- Average rainfall days in September: 1.9 days
The months with the highest number of rainy days are April and November (7 days).
The month with the least rainy days is August (0.4 days).
Average sea temperature in September
Alcantarilha, Portugal
- Average sea temperature in September: 21°C
The best months for swimming (with the highest average sea temperature) are August and September (21°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in September /
Average sunshine in September
Alcantarilha, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in September
Alcantarilha, Portugal
- Average sunshine days in September: 26.9 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is April (20.1 days).
Average UV index in September
Alcantarilha, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, 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
Alcantarilha, Portugal
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in September
Alcantarilha, 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).
Alcantarilha, Portugal
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