Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival in San Miguel registers an average high-temperature of a pleasant 22.9°C (73.2°F), closely aligning with the temperature of the previous month. San Miguel experiences an average low-temperature of 16.5°C (61.7°F) in the month of September.Humidity
In San Miguel, Costa Rica, the average relative humidity in September is 89%.Rainfall
In San Miguel, during September, the rain falls for 29.7 days and regularly aggregates up to 320mm (12.6") of precipitation. In San Miguel, during the entire year, the rain falls for 305 days and collects up to 2534mm (99.76") of precipitation.Daylight
In San Miguel, Costa Rica, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 05:27 and sunset at 17:45. On the last day of September, sunrise is at 05:24 and sunset at 17:27 CST.
Sunshine
In September, the average sunshine in San Miguel, Costa Rica, is 7.3h.UV index
January through December, with an average maximum UV index of 5, are months with the highest UV index. January through December, with an average maximum UV index of 5, are months with the lowest UV index in San Miguel, Costa Rica. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 5 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in San Miguel?
What is the average humidity in September in San Miguel?
How much does it rain in San Miguel in September?
What is the average length of the day in September in San Miguel?
When are sunrise and sunset in September in San Miguel?
How many hours of sunshine does San Miguel have in September?
What are the months with the highest UV index in San Miguel?
When is the lowest UV index in San Miguel?
How high is the UV index in September in San Miguel?
Average temperature in September
San Miguel, Costa Rica
- Average high temperature in September: 22.9°C
The warmest month (with the highest average high temperature) is April (25.3°C).
The month with the lowest average high temperature is October (22.2°C).
- Average low temperature in September: 16.5°C
The month with the highest average low temperature is May (16.9°C).
The coldest month (with the lowest average low temperature) is January (13.7°C).
Average pressure in September
San Miguel, Costa Rica
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is January (1012.4mbar).
The month with the lowest atmospheric pressure is October (1010.9mbar).
Average wind speed in September
San Miguel, Costa Rica
- Average wind speed in September: 3.7km/h
The windiest month (with the highest average wind speed) is February (8.6km/h).
The calmest month (with the lowest average wind speed) is September (3.7km/h).
Average humidity in September
San Miguel, Costa Rica
- Average humidity in September: 89%
The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is February (76%).
Average rainfall in September
San Miguel, Costa Rica
- Average rainfall in September: 320mm
The wettest month (with the highest rainfall) is October (444mm).
The driest month (with the least rainfall) is February (33mm).
Average rainfall days in September
San Miguel, Costa Rica
- Average rainfall days in September: 29.7 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (14.9 days).
Average daylight in September /
Average sunshine in September
San Miguel, Costa Rica
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is October (Average sunshine: 6h and 30min).
Average sunshine days in September
San Miguel, Costa Rica
- Average sunshine days in September: 0.3 days
The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is October (0.1 days).
Average UV index in September
San Miguel, Costa Rica
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
San Miguel, Costa Rica
- Average cloud cover in September: 56
The month with the most cloud cover is October (Cloud cover 61).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility in September
San Miguel, Costa Rica
- Average visibility in September: 6km
The months with the highest visibility are January, February and March (9km).
The months with the lowest visibility are September and October (6km).
San Miguel, Costa Rica
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