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
Santa Ana, Costa Rica, marks the onset of September with an average high-temperature of a still moderately hot 24.3°C (75.7°F), a subtle shift from August's 24.9°C (76.8°F). Throughout September, an average nighttime temperature of 17.7°C (63.9°F) is experienced.Humidity
In Santa Ana, the average relative humidity in September is 89%.Rainfall
In Santa Ana, in September, it is raining for 29.5 days, with typically 349mm (13.74") of accumulated precipitation. Throughout the year, in Santa Ana, there are 289.2 rainfall days, and 2603mm (102.48") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 11min.On the first day of September, sunrise is at 05:27 and sunset at 17:45. On the last day of the month, sunrise is at 05:25 and sunset at 17:27 CST.
Sunshine
In Santa Ana, the average sunshine in September is 6.8h.UV index
January, February, May through December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the usual temperature for Santa Ana in September?
What is the average humidity in September in Santa Ana?
How many days does it rain in September in Santa Ana?
What is the average length of the day in September in Santa Ana?
What time are sunrise and sunset in September in Santa Ana?
How many hours of sunshine does Santa Ana have in September?
When is the lowest UV index in Santa Ana?
How high is the UV index in September in Santa Ana?
Average temperature in September
Santa Ana, Costa Rica
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is April (28°C).
The month with the lowest average high temperature is October (23.7°C).
- Average low temperature in September: 17.7°C
The month with the highest average low temperature is May (18.5°C).
The coldest month (with the lowest average low temperature) is January (15.3°C).
Average pressure in September
Santa Ana, Costa Rica
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).
Average wind speed in September
Santa Ana, Costa Rica
- Average wind speed in September: 3.9km/h
The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (3.9km/h).
Average humidity in September
Santa Ana, 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 March (71%).
Average rainfall in September
Santa Ana, Costa Rica
- Average rainfall in September: 349mm
The wettest month (with the highest rainfall) is October (429mm).
The driest month (with the least rainfall) is February (24mm).
Average rainfall days in September
Santa Ana, Costa Rica
- Average rainfall days in September: 29.5 days
The month with the highest number of rainy days is October (30.5 days).
The month with the least rainy days is February (11.8 days).
Average daylight in September /
Average sunshine in September
Santa Ana, 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: 6h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 6h and 6min).
Average sunshine days in September
Santa Ana, Costa Rica
- Average sunshine days in September: 0.4 days
The month with the most sunshine days is February (13.1 days).
The month with the least sunshine days is July (0.3 days).
Average UV index in September
Santa Ana, Costa Rica
- Average UV index in September: 5
The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Santa Ana, Costa Rica
- Average cloud cover in September: 60
The month with the most cloud cover is October (Cloud cover 63).
The month with the least cloud cover is February (Cloud cover 23).
Average visibility in September
Santa Ana, Costa Rica
- Average visibility in September: 6km
The months with the highest visibility are January, February, March and April (9km).
The months with the lowest visibility are September and October (6km).
Santa Ana, Costa Rica
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