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 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
The start of September marks an average high-temperature of a still warm 78.3°F, hardly distinguishable from the conditions in August. The nighttime temperature dips to an enjoyable 63.9°F on average during September.Humidity
In September, the average relative humidity is 69%.Rainfall
In Charneca, during September, the rain falls for 3.3 days and regularly aggregates up to 0.12" of precipitation. In Charneca, during the entire year, the rain falls for 54.4 days and collects up to 2.44" of precipitation.Daylight
In September, the average length of the day 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 Charneca, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
The average sunshine in September in Charneca is 9.4h.UV index
The months with the highest UV index in Charneca 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 exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Charneca?
What is the average humidity in September in Charneca?
How many days does it rain in September in Charneca?
What is the average length of the day in September in Charneca?
When are sunrise and sunset in September in Charneca?
How long on average sun shines in September in Charneca?
When is the highest UV index in Charneca?
What is the UV index reading in September in Charneca?
Average temperature in September
Charneca, Portugal
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is January (58.8°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in September
Charneca, Portugal
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is December (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.99"Hg).
Average wind speed in September
Charneca, Portugal
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is February (10.3mph).
The calmest month (with the lowest average wind speed) is September (8.1mph).
Average humidity in September
Charneca, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Charneca, Portugal
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is November (0.59").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in September
Charneca, Portugal
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Charneca, 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 24min).
Average sunshine days in September
Charneca, Portugal
- Average sunshine days in September: 26.1 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).
Average UV index in September
Charneca, 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
Charneca, 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 13).
Average visibility in September
Charneca, Portugal
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
