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 snowfall in September
- Average snowfall days 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
Semelhe notes an average high-temperature of a still moderately hot 25.8°C (78.4°F) in September, displaying minor variation from August. Semelhe logs a substantial downturn to a moderate 13.8°C (56.8°F) during September nights, a considerable shift from daytime highs.Humidity
In Semelhe, the average relative humidity in September is 65%.Rainfall
In Semelhe, in September, it is raining for 7.4 days, with typically 35mm (1.38") of accumulated precipitation. In Semelhe, Portugal, during the entire year, the rain falls for 139.7 days and collects up to 924mm (36.38") of precipitation.Snowfall
In Semelhe, snow does not fall in February through December.Daylight
The average length of the day in September in Semelhe is 12h and 28min.On the first day of the month, sunrise is at 07:00 and sunset at 20:06. On the last day of September, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
In Semelhe, the average sunshine in September is 9h.UV index
In Semelhe, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during September translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Semelhe in September?
What is the average humidity in September in Semelhe?
How much does it rain in Semelhe in September?
When it does not snow in Semelhe?
What is the average length of the day in September in Semelhe?
What time are sunrise and sunset in September in Semelhe?
How many hours of sunshine does Semelhe have in September?
What is the UV index intensity in September in Semelhe?
Average temperature in September
Semelhe, Portugal
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (11.8°C).
- Average low temperature in September: 13.8°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is February (5°C).
Average pressure in September
Semelhe, Portugal
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Semelhe, Portugal
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).
Average humidity in September
Semelhe, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Semelhe, Portugal
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (136mm).
The driest month (with the least rainfall) is July (11mm).
Average rainfall days in September
Semelhe, Portugal
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is January (15.8 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in September
Semelhe, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is January (1mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Semelhe, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Semelhe, Portugal
- Average daylight in September: 12h and 3min
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 12min).
- Average sunshine in September: 9h and 0min
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 42min).
Average sunshine days in September
Semelhe, Portugal
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is August (24.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in September
Semelhe, 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, March, April, November and December (UV index 3).
Average cloud cover in September
Semelhe, Portugal
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in September
Semelhe, Portugal
- Average visibility in September: 9km
The months with the highest visibility are June, July, August and September (9km).
The month with the lowest visibility is January (7km).
