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
On the advent of September, Guaitil's average high-temperature exhibits a minor adjustment to a still warm 24.3°C (75.7°F) from August's 24.9°C (76.8°F). Guaitil, during September, witnesses an average low-temperature of 17.7°C (63.9°F).Humidity
In Guaitil, the average relative humidity in September is 89%.Rainfall
In Guaitil, in September, it is raining for 29.5 days, with typically 349mm (13.74") of accumulated precipitation. In Guaitil, during the entire year, the rain falls for 289.2 days and collects up to 2603mm (102.48") of precipitation.Daylight
In September, the average length of the day in Guaitil 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 Guaitil, 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 estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the average September temperature in Guaitil?
What is the average humidity in September in Guaitil?
How many days does it rain in September in Guaitil?
How many hours of daylight does Guaitil have in September?
When are sunrise and sunset in September in Guaitil?
How long on average sun shines in September in Guaitil?
When is the lowest UV index in Guaitil?
How high is the UV index in September in Guaitil?
Average temperature in September
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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
Guaitil, 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).
Guaitil, Costa Rica
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