September weather forecast
Montijo, Portugal

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Weather in September

September observes a gradual cooling trend in Montijo but maintains the summer ambiance. A moderate dip in temperatures, peaking at 26.5°C (79.7°F) and tapering to 16.9°C (62.4°F), signals the onset of autumn. The daylight hours and sunshine days decrease slightly, moving towards a more balanced climate. September carries forward the mellow sea temperature from the previous months, extending the beach season. In contrast to the dry summer months, September's rainfall starts to climb, albeit insignificantly.

Temperature

The onset of September in Montijo notes an average high-temperature of a still warm 26.5°C (79.7°F), subtly shifted from August's 28.5°C (83.3°F). Montijo, during September, witnesses an average low-temperature of 16.9°C (62.4°F).

Humidity

In Montijo, the average relative humidity in September is 67%.

Rainfall

In Montijo, in September, it is raining for 3.6 days, with typically 7mm (0.28") of accumulated precipitation. In Montijo, during the entire year, the rain falls for 78.2 days and collects up to 171mm (6.73") of precipitation.

Sea temperature

With an average sea temperature of 20°C (68°F), September is the month with the warmest seawater in Montijo.
Note: Most people find it challenging to enjoy swimming in water that is 20°C (68°F). As water temperature falls below 21°C (69.8°F), controlling breathing grows increasingly difficult.

Daylight

In September, the average length of the day in Montijo is 12h and 26min.
On the first day of September in Montijo, Portugal, sunrise is at 07:05 and sunset at 20:05. On the last day of the month, sunrise is at 07:31 and sunset at 19:20 WEST.

Sunshine

In September, the average sunshine in Montijo is 9.4h.

UV index

The months with the highest UV index in Montijo are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Frequently asked questions

What is the temperature in September in Montijo?

During September, Montijo experiences an average high-temperature of 26.5°C (79.7°F) and a low-temperature of 16.9°C (62.4°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 31°C (87.8°F).

What is the average humidity in September in Montijo?

The average relative humidity in September in Montijo is 67%.

How many days does it rain in September in Montijo?

In September, in Montijo, the rain falls for 3.6 days. Throughout September, 7mm (0.28") of precipitation is accumulated.

What is the month with the warmest sea water in Montijo?

With an average sea temperature of 20°C (68°F), September is the month with the warmest seawater in Montijo.

What is the sea water temperature in September in Montijo?

In Montijo, Portugal, in September, the average water temperature is 20°C (68°F). Swimming in 20°C (68°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

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

In September, the average day length in Montijo is 12h and 26min.

When are sunrise and sunset in September in Montijo?

On the first day of September, sunrise is at 07:05 and sunset at 20:05. On the last day of the month, sunrise is at 07:31 and sunset at 19:20 WEST.

How long on average sun shines in September in Montijo?

In September, the average sunshine duration in Montijo, Portugal, is 9.4h.

What is the month with the highest UV index in Montijo?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in September in Montijo?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in September
Montijo, Portugal

Average temperature in September - Montijo, Portugal
  • Average high temperature in September: 26.5°C

The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in September: 16.9°C

The months with the highest average low temperature are July and August (17.3°C).
The coldest month (with the lowest average low temperature) is February (9°C).

Average pressure in September
Montijo, Portugal

Average pressure in September - Montijo, Portugal
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

Average wind speed in September
Montijo, Portugal

Average wind speed in September - Montijo, Portugal
  • Average wind speed in September: 11.8km/h

The windiest month (with the highest average wind speed) is February (15km/h).
The calmest month (with the lowest average wind speed) is September (11.8km/h).

Average humidity in September
Montijo, Portugal

Average humidity in September - Montijo, Portugal
  • Average humidity in September: 67%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
Montijo, Portugal

Average rainfall in September - Montijo, Portugal
  • Average rainfall in September: 7mm

The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days in September
Montijo, Portugal

Average rainfall days in September - Montijo, Portugal
  • Average rainfall days in September: 3.6 days

The month with the highest number of rainy days is April (11 days).
The month with the least rainy days is August (1.6 days).

Average sea temperature in September
Montijo, Portugal

Average sea temperature in September - Montijo, Portugal
  • Average sea temperature in September: 20°C

The best month for swimming (with the highest average sea temperature) is September (20°C).
The coldest month (with the lowest average sea temperature) is March (15.2°C).

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

Average daylight in September / Average sunshine in September - Montijo, 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 18min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

Average sunshine days in September
Montijo, Portugal

Average sunshine days in September - Montijo, Portugal
  • Average sunshine days in September: 25.3 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is April (17.2 days).

Average UV index in September
Montijo, Portugal

Average UV index in September - Montijo, Portugal
  • Average UV index in September: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Montijo, Portugal

Average cloud cover in September - Montijo, Portugal
  • Average cloud cover in September: 17

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in September
Montijo, Portugal

Average visibility in September - Montijo, 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).

Montijo, Portugal

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