Measurements:
°C
°F
Alajuela
58°F
SW 6 mph
Feels like: 56°F
Precip: 0%
World Resorts Costa Rica Alajuela Weather September Weather in Alajuela

Alajuela Weather: September

Average Day Temperature: 80.2°F
Average Night Temperature: 65.2°F
Sea Water Temperature: 87.4°F
Number of Sunny Days: 2 days
Sunshine Hours: 12.0 - 12.3 hours
Number of Rainy Days: 26 days
Precipitation Totals: 23.0 in

Air Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
14
28
42
56
70
84
98
Day Temperature   
Night Temperature

The highest day temperature in September 2024 was 82°F. The lowest night temperature was 60°F. The average values for day and night temperatures during September were 76.8°F и 63.9°F respectivly.

Alajuela Water Sea Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
82
84
86
88
90
92
94
96

The average sea surface temperature in September 2024 for Alajuela was 87.8°F. The maximum and minimum values were 86.6°F and 88.6°F respectively.

Sunny, Cloudy and Gloomy days
Sunny days
Cloudy days
Gloomy days
6%
52%
42%

Most of the days in September are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in September, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
4
8
12
16
20
24
28
32

Precipitation total in September for Alajuela is 23.0 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.1
2.3
3.4
4.6
5.7
6.9
8.0
9.1

The average wind speed in September is 2.3 mph. It makes September the most windless month of the year for Alajuela.

Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.5
3.0
4.5
6.0
7.5
9.0
10.5

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Alajuela in September is 5.2 hours.

Best Time to Visit Alajuela
The most sunny months:
February 17 days
January 16 days
March 16 days
The most warm months:
March 87.4 °F
April 86.7 °F
February 85.9 °F
Warmest sea temperature:
April 89.0 °F
May 88.8 °F
March 88.5 °F
The most cold months:
November 78.9 °F
October 78.9 °F
September 80.2 °F
The most rainy months:
October 26 days
September 26 days
June 25 days
The most windy months:
February 6 mph
January 6 mph
March 6 mph

Alajuela on the Weather Map

Costa Rica Resorts:
NAME
Alajuela +58
Cartago +54
Heredia +60
Jaco +84
Limon +78
Playa Flamingo +84
Playas del Coco +84
Puerto Limon +78
Puerto Viejo de Talamanca +78
Quepos +84
Samara +82
San Jose +60
Santa Teresa +84
Tamarindo +84
Tortuguero +78
24 Hours Weather Forecast
Alajuela
Local time: 06:18
09 apr, wednesday
0900 84°F
SW
6 mph
1200 90°F
SW
8 mph
1500 82°F
SW
6 mph
1800 72°F
SW
6 mph
2100 62°F
SW
6 mph
10 apr, thursday
0000 58°F
SW
6 mph
0300 58°F
SW
6 mph
0600 58°F
SW
6 mph