September weather forecastAstillero, Guatemala
September weather forecast for Astillero, Guatemala: The average heat index, which represents the influence of relative humidity on air temperature, in September is appraised at 42°C (107.6°F). September, the first month of the autumn in Astillero, is also a hot month, with an average temperature varying between 24.5°C (76.1°F) and 32°C (89.6°F).
September
Weather in September
September, the first month of the autumn in Astillero, is also a hot month, with an average temperature varying between 24.5°C (76.1°F) and 32°C (89.6°F).Temperature
With the onset of September, Astillero's average high-temperature clocks in at a still hot 32°C (89.6°F), showing a minor fluctuation from the previous month. The nighttime temperature dips to a warm 24.5°C (76.1°F) on average during September.Heat index
In September, the average heat index is appraised at an extremely hot 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
September and October, with an average relative humidity of 74%, are the most humid months.Rainfall
In Astillero, in September, it is raining for 26.2 days, with typically 110mm (4.33") of accumulated precipitation. Throughout the year, there are 190.7 rainfall days, and 718mm (28.27") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 12min.On the first day of the month, sunrise is at 05:49 and sunset at 18:12. On the last day of September, sunrise is at 05:50 and sunset at 17:51 CST.
Sunshine
In September, the average sunshine is 10.4h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily UV index of 7 turns into the following recommendations:
Fend off overexposure. Sun protection is vital. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Astillero, Guatemala
- Average high temperature in September: 32°C
The warmest month (with the highest average high temperature) is April (33.3°C).
The month with the lowest average high temperature is October (31.5°C).
- Average low temperature in September: 24.5°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.7°C).
Average pressure in September
Astillero, Guatemala
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is January (1013.7mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).
Average wind speed in September
Astillero, Guatemala
- Average wind speed in September: 7.6km/h
The windiest month (with the highest average wind speed) is March (9.2km/h).
The calmest months (with the lowest average wind speed) are June and October (7.5km/h).
Average humidity in September
Astillero, Guatemala
- Average humidity in September: 74%
The months with the highest relative humidity are September and October (74%).
The month with the lowest relative humidity is March (60%).
Average rainfall in September
Astillero, Guatemala
- Average rainfall in September: 110mm
The wettest month (with the highest rainfall) is October (159mm).
The driest month (with the least rainfall) is January (3mm).
Average rainfall days in September
Astillero, Guatemala
- Average rainfall days in September: 26.2 days
The month with the highest number of rainy days is September (26.2 days).
The month with the least rainy days is January (3.1 days).
Average daylight in September /
Average sunshine in September
Astillero, Guatemala
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 10h and 24min
The months with the most sunshine are April and July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 7h and 42min).
Average sunshine days in September
Astillero, Guatemala
- Average sunshine days in September: 2 days
The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is September (2 days).
Average UV index in September
Astillero, Guatemala
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Astillero, Guatemala
- Average cloud cover in September: 33
The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is December (Cloud cover 10).
Average visibility in September
Astillero, Guatemala
- 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).
