Costa RicaThe weather in September in Bonifacio
It's hot in September in Bonifacio with an average temperature of 30°C. Temperatures this month range from a low of 30°C to a high of 31°C. At night, you can expect temperatures between 21°C and 22°C.
Looking for sun? September isn’t a good month to be in Bonifacio. 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 Bonifacio, 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 32°C in 2017, Bonifacio reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 21°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 15°C to a highest value of 26°C.
Rainfall amount
In September, there is an average of 213 mm of precipitation, spread over 23 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Bonifacio
Click on any day in September to get detailed info about the usual weather on that day in Bonifacio. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Bonifacio | New York | |
|---|---|---|
| Average temperature | 30°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 21°C | -5°C |
| Total precipitation | 213 mm | 57 mm |
| Rainy days | 23 days | 9 days |
Start of September
The month of September starts in Bonifacio with hot temps, averaging around 31°C during the day and nights around 22°C.
Mid September
By mid-September, daytime temps stay steady at around 31°C, with nights around 22°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Bonifacio is around 31°C, while nighttime temps are about 22°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 9 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 Bonifacio runs from June to November.
Check out the climate of Bonifacio for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Bonifacio, 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 Bonifacio
Temperature in September in Bonifacio over the years
Precipitation charts
These charts show the average amount of precipitation in September in Bonifacio, 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 Bonifacio
Total precipitation in September in Bonifacio over the years
Daily UV index in September in Bonifacio
This chart shows the average daily UV index in September in Bonifacio, 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 Bonifacio
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Average weather in Bonifacio by month
Click on a month below to see detailed weather info for Bonifacio. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.