September weather forecast
Las Cabezas de San Juan, Spain

September

Weather in September

The first month of the autumn, September, is still a tropical month in Las Cabezas de San Juan, Spain, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 19.1°C (66.4°F).

Temperature

The transition into September involves a decrease in the average high-temperature, falling from a very hot 36.8°C (98.2°F) in August to a hot 31.5°C (88.7°F). Las Cabezas de San Juan sees a major change from daytime highs, with the nighttime temperature dipping to a refreshing 19.1°C (66.4°F) on average during September.

Heat index

September's heat index is appraised at a tropical 34°C (93.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

In September, the average relative humidity is 51%.

Rainfall

In Las Cabezas de San Juan, in September, during 5.2 rainfall days, 12mm (0.47") of precipitation is typically accumulated. Throughout the year, there are 85.2 rainfall days, and 337mm (13.27") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 07:55 and sunset at 20:52. On the last day of September, sunrise is at 08:18 and sunset at 20:08 CEST.

Sunshine

In September, the average sunshine is 9.6h.

UV index

In Las Cabezas de San Juan, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 6 in September translates into these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.

Frequently asked questions

How hot is September?
Las Cabezas de San Juan in September has an average high-temperature of 31.5°C (88.7°F) and an average low-temperature of 19.1°C (66.4°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is appraised at 34°C (93.2°F).
What is the average humidity in September?
In September, the average relative humidity is 51%.
How much does it rain in September?
In September, the rain falls for 5.2 days. Throughout September, 12mm (0.47") of precipitation is accumulated.
How many hours of daylight does Las Cabezas de San Juan have in September?
In September, the average day length is 12h and 25min.
When is the sunrise / sunset in September in Las Cabezas de San Juan?
On the first day of September, sunrise is at 07:55 and sunset at 20:52. On the last day of the month, sunrise is at 08:18 and sunset at 20:08 CEST.
How long on average sun shines in September?
In September, the average sunshine duration in Las Cabezas de San Juan is 9.6h.
What is the UV index reading in September in Las Cabezas de San Juan?
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Las Cabezas de San Juan, Spain
  • Average high temperature in September: 31.5°C

The warmest month (with the highest average high temperature) is August (36.8°C).
The month with the lowest average high temperature is January (15.1°C).

  • Average low temperature in September: 19.1°C

The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (6.5°C).

Average pressure in September
Las Cabezas de San Juan, Spain
  • Average pressure in September: 1016.2mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is August (1014.8mbar).

Average wind speed in September
Las Cabezas de San Juan, Spain
  • Average wind speed in September: 7.7km/h

The windiest month (with the highest average wind speed) is March (10.2km/h).
The calmest month (with the lowest average wind speed) is September (7.7km/h).

Average humidity in September
Las Cabezas de San Juan, Spain
  • Average humidity in September: 51%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (40%).

Average rainfall in September
Las Cabezas de San Juan, Spain
  • Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is November (58mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in September
Las Cabezas de San Juan, Spain
  • Average rainfall days in September: 5.2 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (1 days).

Average daylight in September /
Average sunshine in September
Las Cabezas de San Juan, Spain
  • 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 August (Average sunshine: 10h and 18min).
The month with the least sunshine is March (Average sunshine: 8h and 6min).

Average sunshine days in September
Las Cabezas de San Juan, Spain
  • Average sunshine days in September: 23.6 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (16.3 days).

Average UV index in September
Las Cabezas de San Juan, Spain
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Las Cabezas de San Juan, Spain
  • Average cloud cover in September: 14

The month with the most cloud cover is March (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in September
Las Cabezas de San Juan, Spain
  • Average visibility in September: 10km

The months with the highest visibility are May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March and April (9km).

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