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Rainfall & Temperature Chart By Region

(Source: National Weather Services of Costa Rica)
Highest, Lowest Temperatures and Highest Average Rainfall are hightlighted.

Arenal

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 83 84 86 87 88 86 85 85 86 85 83 82
Avg. Min.
Temperature (F)		 68 67 69 69 70 71 71 72 70 70 71 70
Avg. Rainfall
(inches)		 7.5 5 3.6 3.7 10.2 16 20 17 16 17 12 10

Osa Peninsula

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 91 92 92 91 90 89 89 89 90 89 89 90
Avg. Min.
Temperature (F)		 72 71 73 73 73 72 71 71 71 71 71 71
Avg. Rainfall
(inches)		 6.3 5.7 8 11 18.9 17.5 18.9 20.9 22 27.7 22.3 11.6

Guanacaste

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 91 93 96 96 91 89 89 89 87 87 87 89
Avg. Min.
Temperature (F)		 69 71 71 73 73 71 71 71 71 71 69 69
Avg. Rainfall
(inches)		 0.2 0.4 1 2.7 10.8 12.8 9.6 12 15.7 16 12.4 1

Manuel Antonio

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 87 87 89 89 89 87 87 86 86 86 86 86
Avg. Min.
Temperature (F)		 69 69 71 71 71 71 69 69 71 71 71 69
Avg. Rainfall
(inches)		 2.8 1.4 2.5 6.6 15.4 17 18 18.8 20.8 25.4 15.3 6.7

Monteverde

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 68 69 71 71 71 71 69 69 71 69 68 69
Avg. Min.
Temperature (F)		 53 53 53 55 57 57 57 57 55 57 57 57
Avg. Rainfall
(inches)		 6.3 3.8 1.7 4.8 13.7 16.5 14 18 19.4 16.8 16.9 13

San José

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 73 75 77 78 78 78 77 77 76 77 75 73
Avg. Min.
Temperature (F)		 59 59 60 60 62 62 62 62 60 60 60 59
Avg. Rainfall
(inches)		 0.4 0.2 0.5 1.7 8.9 11.3 8.5 9.8 13 13 5.6 1.6

Tortuguero

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Avg. Max.
Temperature (F)		 88 88 87 87 87 87 88 86 87 87 85 88
Avg. Min.
Temperature (F)		 68 68 69 71 71 71 71 71 71 71 69 69
Avg. Rainfall
(inches)		 12.5 8.3 8 10.9 11 11.7 16.8 12.3 5.7 8.2 15.4 17.5