September weather forecast and climate
Negreiros, Portugal

Weather in September

September, the first month of the autumn, in Negreiros, is still a warm month, with average temperature fluctuating between 14.6°C (58.3°F) and 25.7°C (78.3°F).

Temperature

In Negreiros, the average high-temperature is practically the same as in August - a still moderately hot 25.7°C (78.3°F). In September, in Negreiros, Portugal, the average low-temperature is 14.6°C (58.3°F).

Humidity

August and September, with an average relative humidity of 65%, are the least humid months in Negreiros, Portugal.

Rainfall

In Negreiros, during September, the rain falls for 5.8 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, there are 127.9 rainfall days, and 828mm (32.6") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12.5h.

Sunshine

The average sunshine in September is 9.1h.

UV index

The average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in September in Negreiros?

The average high-temperature, in September, in Negreiros, is 25.7°C (78.3°F), while the average low-temperature is 14.6°C (58.3°F).

What are the least humid months in Negreiros?

August and September, with an average relative humidity of 65%, are the least humid months in Negreiros, Portugal.

What is the average humidity in September in Negreiros?

In Negreiros, the average relative humidity in September is 65%.

How much does it rain in Negreiros in September?

In September, in Negreiros, the rain falls for 5.8 days. Throughout September, 31mm (1.22") of precipitation is accumulated.

What is the average length of the day in September in Negreiros?

In September, the average length of the day in Negreiros, Portugal, is 12.5h.

How long on average sun shines in September in Negreiros?

The average sunshine in September is 9.1h.

What is the UV index reading in September in Negreiros?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Negreiros, Portugal

Average temperature in September - Negreiros, Portugal
  • Average high temperature in September: 25.7°C

The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (12.6°C).

  • Average low temperature in September: 14.6°C

The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).

[Resources]

Average pressure in September
Negreiros, Portugal

Average pressure in September - Negreiros, Portugal
  • Average pressure in September: 1017.4mbar

The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

[Resources]

Average wind speed in September
Negreiros, Portugal

Average wind speed in September - Negreiros, Portugal
  • Average wind speed in September: 7.3km/h

The windiest month (with the highest average wind speed) is March (9.3km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).

[Resources]

Average humidity in September
Negreiros, Portugal

Average humidity in September - Negreiros, Portugal
  • Average humidity in September: 65%

The month with the highest relative humidity is January (84%).
Months with the lowest relative humidity are August and September (65%).

[Resources]

Average rainfall in September
Negreiros, Portugal

Average rainfall in September - Negreiros, Portugal
  • Average rainfall in September: 31mm

The wettest month (with the highest rainfall) is November (125mm).
The driest month (with the least rainfall) is July (8mm).

[Resources]

Average rainfall days in September
Negreiros, Portugal

Average rainfall days in September - Negreiros, Portugal
  • Average rainfall days in September: 5.8 days

The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (3.5 days).

[Resources]

Average daylight in September /
Average sunshine in September
Negreiros, Portugal

Average daylight in September / Average sunshine in September - Negreiros, Portugal
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is January (Average sunshine: 4.9h).

[Resources]

Average sunshine days in September
Negreiros, Portugal

Average sunshine days in September - Negreiros, Portugal
  • Average sunshine days in September: 23.5 days

The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is November (13.2 days).

[Resources]

Average UV index in September
Negreiros, Portugal

Average UV index in September - Negreiros, Portugal
  • Average UV index in September: 5

The month with the highest UV index is August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

[Resources]

Average cloud cover in September
Negreiros, Portugal

Average cloud cover in September - Negreiros, Portugal
  • Average cloud cover in September: 24

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 22).

[Resources]

Average visibility in September
Negreiros, Portugal

Average visibility in September - Negreiros, Portugal
  • Average visibility in September: 9km

Months with the highest visibility are February, March, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January and April (8km).

[Resources]