Normal weather in Guanacaste in September
The weather in Guanacaste in September has an average temperature of around 28°C during the day. On average, September sees 218 mm of rain in Guanacaste. The wind speed is 3 Beaufort and mainly comes from East.
After August, September in Guanacaste starts with a temperature of 29°C and ends around October at 28°C.
The hurricane season in Guanacaste lasts from early June to late November.
September averages for Guanacaste
 Average temperature | 28°C |
 Highest daytime temperature | 29°C |
| Lowest daytime temperature | 27°C |
 Total rainfall | 218 mm |
| Rainy days | 23 days |
Temperature per day in September in Guanacaste
This graph shows the average daily maximum temperatures in September in Guanacaste, indicated in degrees Celsius.
Precipitation per day in September in Guanacaste
This graph shows the average daily precipitation in September in Guanacaste, indicated in millimeters.
UV index per day in September in Guanacaste
This graph shows the average daily UV index in September in Guanacaste.
Yearly temperature in September in Guanacaste
This graph shows the average yearly temperature in September in Guanacaste, measured in degrees Celsius, over the past years.
Yearly total precipitation in September in Guanacaste
This graph shows the average yearly precipitation in millimeters in September in Guanacaste, over the past years.
Average daily weather in September
Click on a day to get more information about the average weather on that day.
Average weather in Guanacaste per month
Click on a month below to see in detail how the weather typically is in Guanacaste and what to expect. Based on the historical weather data of Guanacaste, you can view the average temperature, precipitation, wind, and UV index for each day of the month.