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Alajuela sea water temperature

Current sea water temperature:
+83.8°F
Minimum sea water temperature in January: 87.1°F
Maximum sea water temperature in January: 80.2°F
Average sea water temperature in January: 83.7°F

Sea water temperature for the last 10 days:

January 13 83.8°F January 8 84.0°F
January 12 84.2°F January 7 83.7°F
January 11 83.7°F January 6 83.7°F
January 10 83.8°F January 5 84.0°F
January 9 83.8°F January 4 84.0°F

When is the warmest sea in Alajuela?

Based on the data about daily sea water temperature for the last three years the warmest sea in Alajuela was noticed in April, May and March.

Monthly Sea Temperatures in Alajuela, °F

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 86.5°F. The highest and lowest sea temperatures during the month were 87.1°F and 85.8°F.

Sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 85.8°F. The highest and lowest sea temperatures during the month were 86.7°F and 84.9°F.

Sea water temperature in March, °F

Show year:
2025
2024
2023

The average sea water temperature in March of 2025 was 85.5°F. The highest and lowest sea temperatures during the month were 86.4°F and 84.6°F.

Best time for vacation in Alajuela

Sunniest months:
February 17 days
January 16 days
March 16 days
Warmest months:
March 83.6 °F
April 82.8 °F
February 82.3 °F
Warmest sea temp:
April 85.2 °F
May 85.0 °F
March 84.7 °F
Coldest months:
October 75.8 °F
November 76.0 °F
September 77.0 °F
Rainiest months:
October 25 days
June 25 days
September 25 days
Windiest months:
February 6.7 mph
January 6.3 mph
March 5.8 mph

Alajuela on a weather map

Alajuela
+54°F
SW 6 mph
Feels like: +52°F
Precip.: 0%
Places in Costa Rica:
Name
°F
+54°F
+75°F
+52°F
+70°F
+66°F
+70°F
+70°F
+72°F
+52°F
+75°F
+73°F
+70°F
24 Hours Forecast
Alajuela
Local time: 03:32
January 13, tuesday
0600
52°F
SW
6 mph
0900
68°F
SW
6 mph
1200
81°F
SW
9 mph
1500
75°F
S
3 mph
1800
59°F
SW
4 mph
2100
55°F
SW
5 mph
January 14, wednesday
0000
54°F
SW
5 mph
0300
52°F
SW
5 mph
Units of measurement: °C / °F