Ostional weather in September (Guanacaste, Costa Rica)
How does the weather in Ostional usually fare in September? Is now the perfect time to visit? Find all the weather insights for this month on this page.
Temperatures
In September, the weather in Ostional generally includes high temperatures and heavy rainfall. As the day progresses, temperatures can peak at 29°C. Luckily at nightfall, they typically drop to 25°C.
Precipitation
Ostional in September falls under the rainy season with heavy rainfall, averaging around 417 mm for the month. Historically, the month has about 23 days of rain.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Ostional. January, February and March typically offer the most optimal weather. In contrast, May, June, July, August, September and October tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Ostional climate page with graphs.
Ostional, monthly averages in September
Min Temperature
25°C
Max Temperature
29°C
Chance of Rain
77%
Precipitation
417 mm
Rainy days
23 days
Where to go in Costa Rica in September
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Ostional.
Our site offers climate and forecast data for every country in the world. Are you going to Costa Rica? On this website you can find historical weather averages for many cities in Costa Rica. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
