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 sea temperature 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
Shifting into September, Dominical records an average high-temperature of a pleasant 22.5°C (72.5°F), presenting minor fluctuations compared to the previous month. Dominical sees an average low-temperature of 17.1°C (62.8°F) during September.Humidity
In September, the average relative humidity is 90%.Rainfall
In Dominical, in September, it is raining for 29.5 days, with typically 341mm (13.43") of accumulated precipitation. In Dominical, during the entire year, the rain falls for 294.6 days and collects up to 2842mm (111.89") of precipitation.Sea temperature
The months with the warmest seawater in Dominical are March through June, August and September, with an average sea temperature of 29°C (84.2°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.
Daylight
The average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 05:26 and sunset at 17:43. On the last day of September, sunrise is at 05:23 and sunset at 17:26 CST.
Sunshine
The average sunshine in September is 7.3h.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 medium health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 5 during September leads to these advisories:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Heads up! UV intensity is amplified by reflections from water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Dominical in September?
What is the average humidity in September in Dominical?
How much does it rain in Dominical in September?
What are the months with the warmest sea water in Dominical?
What is the water temperature in September in Dominical?
How many hours of daylight does Dominical have in September?
When are sunrise and sunset in September in Dominical?
How many hours of sunshine does Dominical have in September?
What is the month with the lowest UV index in Dominical?
How high is the UV index in September in Dominical?
Average temperature in September
Dominical, Costa Rica
- Average high temperature in September: 22.5°C
The warmest month (with the highest average high temperature) is March (26.2°C).
The month with the lowest average high temperature is October (22.2°C).
- Average low temperature in September: 17.1°C
The month with the highest average low temperature is May (17.4°C).
The coldest month (with the lowest average low temperature) is January (15.3°C).
Average pressure in September
Dominical, Costa Rica
- Average pressure in September: 1011.3mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1011mbar).
Average wind speed in September
Dominical, Costa Rica
- Average wind speed in September: 3.1km/h
The windiest month (with the highest average wind speed) is February (5.6km/h).
The calmest month (with the lowest average wind speed) is September (3.1km/h).
Average humidity in September
Dominical, Costa Rica
- Average humidity in September: 90%
The month with the highest relative humidity is October (91%).
The months with the lowest relative humidity are February and March (75%).
Average rainfall in September
Dominical, Costa Rica
- Average rainfall in September: 341mm
The wettest month (with the highest rainfall) is October (479mm).
The driest month (with the least rainfall) is February (20mm).
Average rainfall days in September
Dominical, Costa Rica
- Average rainfall days in September: 29.5 days
The month with the highest number of rainy days is August (30.9 days).
The month with the least rainy days is February (11.4 days).
Average sea temperature in September
Dominical, Costa Rica
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are March, April, May, June, August and September (29°C).
The coldest months (with the lowest average sea temperature) are January, February, July, October, November and December (28°C).
Average daylight in September /
Average sunshine in September
Dominical, 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 36min).
The month with the least sunshine is October (Average sunshine: 6h and 24min).
Average sunshine days in September
Dominical, Costa Rica
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is February (14.5 days).
The month with the least sunshine days is August (0 days).
Average UV index in September
Dominical, 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
Dominical, Costa Rica
- Average cloud cover in September: 55
The month with the most cloud cover is October (Cloud cover 59).
The month with the least cloud cover is February (Cloud cover 22).
Average visibility in September
Dominical, Costa Rica
- Average visibility in September: 7km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are September and October (7km).
Dominical, Costa Rica
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