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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.

Temperature per day in September in Guanacaste

This graph shows the average daily maximum temperatures in September in Guanacaste, indicated in degrees Celsius.

Temperature per day in September in Guanacaste

Precipitation per day in September in Guanacaste

This graph shows the average daily precipitation in September in Guanacaste, indicated in millimeters.

Precipitation per day in September in Guanacaste

UV index per day in September in Guanacaste

This graph shows the average daily UV index in September in Guanacaste.

UV index per day 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 temperature in September in Guanacaste

Yearly total precipitation in September in Guanacaste

This graph shows the average yearly precipitation in millimeters in September in Guanacaste, over the past years.

Precipitation per year in September in Guanacaste

Check out the weather in Guanacaste

Average daily weather in September

weather
max/min
rain
wind
uv
1 September
rain
29° 20°
4,8 mm
O 3
8
2 September
rain
29° 21°
6,0 mm
NO 3
8
3 September
rain
28° 20°
4,9 mm
O 3
9
4 September
rain
28° 20°
4,5 mm
NO 3
9
5 September
rain
28° 20°
4,4 mm
NO 3
8
6 September
rain
28° 20°
2,9 mm
NO 3
8
7 September
rain
29° 21°
6,5 mm
NO 4
9
8 September
rain
29° 20°
8,2 mm
O 3
8
9 September
rain
28° 20°
8,8 mm
O 3
8
10 September
rain
29° 20°
5,8 mm
O 3
9
11 September
rain
29° 20°
5,2 mm
NO 3
9
12 September
rain
28° 20°
8,9 mm
NO 3
9
13 September
rain
29° 20°
10,0 mm
NO 3
9
14 September
rain
29° 20°
6,6 mm
NO 3
9
15 September
rain
29° 20°
4,1 mm
NO 3
8
16 September
rain
29° 20°
2,4 mm
NO 3
9
17 September
rain
29° 20°
4,5 mm
O 3
9
18 September
rain
29° 20°
7,4 mm
NO 3
9
19 September
rain
28° 20°
8,5 mm
NO 3
9
20 September
rain
29° 20°
16,2 mm
NO 3
8
21 September
rain
27° 20°
8,6 mm
NO 3
8
22 September
rain
28° 20°
7,2 mm
O 3
8
23 September
rain
28° 20°
11,5 mm
O 3
8
24 September
rain
28° 20°
10,6 mm
O 3
8
25 September
rain
27° 20°
10,4 mm
O 3
8
26 September
rain
28° 20°
8,5 mm
O 3
8
27 September
rain
28° 20°
8,9 mm
O 3
8
28 September
rain
29° 20°
8,2 mm
O 3
8
29 September
rain
29° 20°
6,4 mm
O 3
8
30 September
rain
28° 20°
7,1 mm
O 3
9

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.