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
Grecia's average high-temperature in September is a still warm 26.3°C (79.3°F), marking an insignificant difference from the 26.7°C (80.1°F) of August. Grecia in September anticipates an average nighttime temperature of 19.2°C (66.6°F).Humidity
The average relative humidity in September in Grecia, Costa Rica, is 87%.Rainfall
In September, the rain falls for 29.4 days. Throughout September, 288mm (11.34") of precipitation is accumulated. In Grecia, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.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 17:46. On the last day of the month, sunrise is at 05:25 and sunset at 17:28 CST.
Sunshine
In Grecia, the average sunshine in September is 7.6h.UV index
The months with the highest UV index in Grecia are January through April, June, July, September, October and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grecia in September?
What is the average humidity in September in Grecia?
How many days does it rain in September in Grecia?
What is the average length of the day in September in Grecia?
What time are sunrise and sunset in September in Grecia?
How long on average sun shines in September in Grecia?
What are the months with the highest UV index in Grecia?
What is the UV index intensity in September in Grecia?
Average temperature in September
Grecia, Costa Rica
- Average high temperature in September: 26.3°C
The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in September
Grecia, Costa Rica
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).
Average wind speed in September
Grecia, Costa Rica
- Average wind speed in September: 3.8km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).
Average humidity in September
Grecia, Costa Rica
- Average humidity in September: 87%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Grecia, Costa Rica
- Average rainfall in September: 288mm
The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in September
Grecia, Costa Rica
- Average rainfall days in September: 29.4 days
The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).
Average daylight in September /
Average sunshine in September
Grecia, 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 30min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).
Average sunshine days in September
Grecia, Costa Rica
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in September
Grecia, Costa Rica
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).
Average cloud cover in September
Grecia, Costa Rica
- Average cloud cover in September: 50
The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in September
Grecia, 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 August, September, October and November (7km).
Grecia, Costa Rica
Weather forecast for your location
2. Allow the app to use your location