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Costa RicaThe weather in September in San José de la Montaña
It's warm in September in San José de la Montaña with an average temperature of 27°C. Temperatures this month range from a low of 26°C to a high of 28°C. At night, you can expect temperatures between 19°C and 20°C.
Looking for sun? September isn’t a good month to be in San José de la Montaña. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for San José de la Montaña, Costa Rica. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2015, San José de la Montaña reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 23°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 10°C to a highest value of 22°C.
Rainfall amount
In September, there is an average of 292 mm of precipitation, spread over 26 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in September for San José de la Montaña
Click on any day in September to get detailed info about the usual weather on that day in San José de la Montaña. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| San José de la Montaña | New York | |
|---|---|---|
| Average temperature | 27°C | 27°C |
| Max. temperature | 28°C | 31°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 292 mm | 57 mm |
| Rainy days | 26 days | 9 days |
Start of September
The month of September starts in San José de la Montaña with hot temps, averaging around 28°C during the day and nights around 20°C.
Mid September
By mid-September, daytime temps stay steady at around 28°C, with nights around 20°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in San José de la Montaña is around 28°C, while nighttime temps are about 20°C. There’s a significant chance of many days with precipitation.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in San José de la Montaña runs from June to November.
Check out the climate of San José de la Montaña for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in San José de la Montaña, Costa Rica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in San José de la Montaña
Temperature in September in San José de la Montaña over the years
Precipitation charts
These charts show the average amount of precipitation in September in San José de la Montaña, Costa Rica. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in San José de la Montaña
Total precipitation in September in San José de la Montaña over the years
Daily UV index in September in San José de la Montaña
This chart shows the average daily UV index in September in San José de la Montaña, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in San José de la Montaña
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Average weather in San José de la Montaña by month
Click on a month below to see detailed weather info for San José de la Montaña. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.