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Trip Planning -
About Costa Rica
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| Month | Average Highs | Average Lows | Average Rainfall | Humidity |
| | F | C | F | C | in. | mm | % |
| Jan. |
91 |
33 |
72 |
22 |
6.26 |
159 |
83 |
| Feb. |
92 |
33 |
71 |
22 |
5.75 |
146 |
73 |
| Mar. |
92 |
33 |
73 |
23 |
8.07 |
205 |
80 |
| Apr. |
91 |
33 |
73 |
23 |
11.02 |
280 |
83 |
| May |
90 |
32 |
73 |
23 |
18.9 |
480 |
86 |
| Jun. |
89 |
32 |
72 |
22 |
17.48 |
444 |
88 |
| Jul. |
89 |
32 |
71 |
22 |
18.9 |
480 |
88 |
| Aug. |
89 |
32 |
71 |
22 |
20.91 |
531 |
87 |
| Sep. |
90 |
32 |
71 |
22 |
21.97 |
558 |
88 |
| Oct. |
89 |
32 |
71 |
22 |
27.68 |
703 |
88 |
| Nov. |
89 |
32 |
71 |
22 |
22.28 |
566 |
88 |
| Dec. |
90 |
32 |
71 |
22 |
11.57 |
294 |
85 |
Source: National Weather Services of Costa Rica
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