September weather forecast
El Castillo, Mexico

September

Weather in September

The first month of the autumn, September, is still a pleasant month in El Castillo, Mexico, with an average temperature fluctuating between 22.4°C (72.3°F) and 14.9°C (58.8°F).

Temperature

In September, El Castillo experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 23.5°C (74.3°F) in August to a pleasant 22.4°C (72.3°F). During September, El Castillo records an average temperature of 14.9°C (58.8°F) at night.

Humidity

The most humid month is September, with an average relative humidity of 85%.

Rainfall

In El Castillo, in September, during 25.1 rainfall days, 154mm (6.06") of precipitation is typically accumulated. In El Castillo, during the entire year, the rain falls for 247.2 days and collects up to 1266mm (49.84") of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of September, sunrise is at 6:12 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:16 pm CST.

Sunshine

In September, the average sunshine in El Castillo is 7.4h.

UV index

March through October, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 5 in September translates into these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Frequently asked questions

What are September temperatures?
In El Castillo, 22.4°C (72.3°F) is the average high-temperature and 14.9°C (58.8°F) is the average low-temperature during September.
What is the most humid month?
September is the most humid month, with an average relative humidity of 85%.
What is the average humidity in September?
The average relative humidity in September is 85%.
How much does it rain in September?
In September, the rain falls for 25.1 days. Throughout September, 154mm (6.06") of precipitation is accumulated.
How many hours of daylight does El Castillo have in September?
The average day length in September is 12h and 14min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 6:12 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 6:16 pm CST.
How long on average sun shines in September in El Castillo?
The average sunshine duration in September is 7.4h.
What is the month with the highest UV index?
March through October, with an average maximum UV index of 5, are months with the highest UV index.
How high is the UV index in September?
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
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 - El Castillo, Mexico
Average temperature in September
El Castillo, Mexico
  • Average high temperature in September: 22.4°C

The warmest months (with the highest average high temperature) are April and May (24.8°C).
The month with the lowest average high temperature is January (18.1°C).

  • Average low temperature in September: 14.9°C

The month with the highest average low temperature is May (16°C).
The coldest month (with the lowest average low temperature) is January (9.9°C).

Average pressure in September - El Castillo, Mexico
Average pressure in September
El Castillo, Mexico
  • Average pressure in September: 1014mbar

The month with the highest atmospheric pressure is January (1019.1mbar).
The month with the lowest atmospheric pressure is May (1013.1mbar).

Average wind speed in September - El Castillo, Mexico
Average wind speed in September
El Castillo, Mexico
  • Average wind speed in September: 6.4km/h

The windiest month (with the highest average wind speed) is April (8.6km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).

Average humidity in September - El Castillo, Mexico
Average humidity in September
El Castillo, Mexico
  • Average humidity in September: 85%

The month with the highest relative humidity is September (85%).
The month with the lowest relative humidity is April (70%).

Average rainfall in September - El Castillo, Mexico
Average rainfall in September
El Castillo, Mexico
  • Average rainfall in September: 154mm

The wettest month (with the highest rainfall) is June (199mm).
The driest month (with the least rainfall) is December (18mm).

Average rainfall days in September - El Castillo, Mexico
Average rainfall days in September
El Castillo, Mexico
  • Average rainfall days in September: 25.1 days

The month with the highest number of rainy days is June (26.8 days).
The month with the least rainy days is December (13.8 days).

Average daylight in September / Average sunshine in September - El Castillo, Mexico
Average daylight in September /
Average sunshine in September
El Castillo, Mexico
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 7h and 2min

The month with the most sunshine is May (Average sunshine: 10h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days in September - El Castillo, Mexico
Average sunshine days in September
El Castillo, Mexico
  • Average sunshine days in September: 2.9 days

The month with the most sunshine days is December (13.2 days).
The month with the least sunshine days is June (1.5 days).

Average UV index in September - El Castillo, Mexico
Average UV index in September
El Castillo, Mexico
  • Average UV index in September: 5

The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 4).

Average cloud cover in September - El Castillo, Mexico
Average cloud cover in September
El Castillo, Mexico
  • Average cloud cover in September: 47

The month with the most cloud cover is September (Cloud cover 47).
The month with the least cloud cover is April (Cloud cover 28).

Average visibility in September - El Castillo, Mexico
Average visibility in September
El Castillo, Mexico
  • Average visibility in September: 8km

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

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