September weather forecast
San Sebastián Río Hondo, Mexico

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Weather in September

The first month of the autumn, September, is still a warm month in San Sebastián Río Hondo, Mexico, with an average temperature fluctuating between 26.9°C (80.4°F) and 22.5°C (72.5°F).

Temperature

September stands out as San Sebastián Río Hondo's coldest month, with temperatures ranging between an average high of 26.9°C (80.4°F) and a low of 22.5°C (72.5°F).

Humidity

With an average relative humidity of 80%, September is the most humid month in San Sebastián Río Hondo.

Rainfall

The month with the most rainfall in San Sebastián Río Hondo, Mexico, is September, when the rain falls for 29.3 days and typically aggregates up to 254mm (10") of precipitation.

Daylight

The average length of the day in September in San Sebastián Río Hondo is 12h and 13min.
On the first day of September, sunrise is at 6:12 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 6:15 pm CST.

Sunshine

In San Sebastián Río Hondo, the average sunshine in September is 8.5h.

UV index

January through March, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the coldest time of year in San Sebastián Río Hondo?

September is the month when San Sebastián Río Hondo, Mexico, experiences its coldest temperatures, averaging a high of 26.9°C (80.4°F) and a low of 22.5°C (72.5°F).

What are the temperatures in San Sebastián Río Hondo in September?

September temperatures in San Sebastián Río Hondo, Mexico, vary between a high-temperature of 26.9°C (80.4°F) and a low-temperature of 22.5°C (72.5°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 32°C (89.6°F).

What is the most humid month in San Sebastián Río Hondo?

With an average relative humidity of 80%, September is the most humid month in San Sebastián Río Hondo.

What is the average humidity in September in San Sebastián Río Hondo?

In San Sebastián Río Hondo, Mexico, the average relative humidity in September is 80%.

What is the wettest month in San Sebastián Río Hondo?

The month with the most rainfall in San Sebastián Río Hondo is September, when the rain falls for 29.3 days and typically aggregates up to 254mm (10") of precipitation.

How many days does it rain in September in San Sebastián Río Hondo?

In San Sebastián Río Hondo, in September, it is raining for 29.3 days, with typically 254mm (10") of accumulated precipitation.

What is the average length of the day in September in San Sebastián Río Hondo?

The average day length in September in San Sebastián Río Hondo, Mexico, is 12h and 13min.

What time are sunrise and sunset in September in San Sebastián Río Hondo?

In September, on the first day of the month, sunrise is at 6:12 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 6:15 pm CST.

How many hours of sunshine does San Sebastián Río Hondo have in September?

In September, the average sunshine duration in San Sebastián Río Hondo is 8.5h.

When is the lowest UV index in San Sebastián Río Hondo?

The months with the lowest UV index are January through March, May, June, August through December, with an average maximum UV index of 6.

What is the UV index reading in September in San Sebastián Río Hondo?

In September, the average daily maximum UV index in San Sebastián Río Hondo, Mexico, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in September
San Sebastián Río Hondo, Mexico

Average temperature in September - San Sebastián Río Hondo, Mexico
  • Average high temperature in September: 26.9°C

The warmest month (with the highest average high temperature) is April (29.6°C).
The month with the lowest average high temperature is September (26.9°C).

  • Average low temperature in September: 22.5°C

The month with the highest average low temperature is May (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.4°C).

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Average pressure in September
San Sebastián Río Hondo, Mexico

Average pressure in September - San Sebastián Río Hondo, Mexico
  • Average pressure in September: 1011.5mbar

The month with the highest atmospheric pressure is January (1014.3mbar).
The month with the lowest atmospheric pressure is May (1011.3mbar).

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Average wind speed in September
San Sebastián Río Hondo, Mexico

Average wind speed in September - San Sebastián Río Hondo, Mexico
  • Average wind speed in September: 7.8km/h

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

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Average humidity in September
San Sebastián Río Hondo, Mexico

Average humidity in September - San Sebastián Río Hondo, Mexico
  • Average humidity in September: 80%

The month with the highest relative humidity is September (80%).
The months with the lowest relative humidity are January and March (64%).

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Average rainfall in September
San Sebastián Río Hondo, Mexico

Average rainfall in September - San Sebastián Río Hondo, Mexico
  • Average rainfall in September: 254mm

The wettest month (with the highest rainfall) is September (254mm).
The driest month (with the least rainfall) is January (4mm).

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Average rainfall days in September
San Sebastián Río Hondo, Mexico

Average rainfall days in September - San Sebastián Río Hondo, Mexico
  • Average rainfall days in September: 29.3 days

The month with the highest number of rainy days is August (30.3 days).
The month with the least rainy days is February (3.4 days).

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Average daylight in September /
Average sunshine in September
San Sebastián Río Hondo, Mexico

Average daylight in September / Average sunshine in September - San Sebastián Río Hondo, Mexico
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).

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Average sunshine days in September
San Sebastián Río Hondo, Mexico

Average sunshine days in September - San Sebastián Río Hondo, Mexico
  • Average sunshine days in September: 0.1 days

The month with the most sunshine days is January (24.8 days).
The months with the least sunshine days are August and September (0.1 days).

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Average UV index in September
San Sebastián Río Hondo, Mexico

Average UV index in September - San Sebastián Río Hondo, Mexico
  • Average UV index in September: 6

The months with the highest UV index are April and July (UV index 7).
The months with the lowest UV index are January, February, March, May, June, August, September, October, November and December (UV index 6).

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Average cloud cover in September
San Sebastián Río Hondo, Mexico

Average cloud cover in September - San Sebastián Río Hondo, Mexico
  • Average cloud cover in September: 38

The months with the most cloud cover are June and September (Cloud cover 38).
The month with the least cloud cover is February (Cloud cover 8).

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Average visibility in September
San Sebastián Río Hondo, Mexico

Average visibility in September - San Sebastián Río Hondo, Mexico
  • Average visibility in September: 9km

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

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San Sebastián Río Hondo, Mexico

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