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South Pacific Region

Last Updated: Nov 08, 2011

beach playa rincon osa peninsula - Costa Rica

The South Pacific Region, which includes the Osa Peninsula and the south Pacific coast, has a shorter dry season and experiences more intense afternoon storms than its northern counterpart, the north Pacific. From the end of December until April, the dry season is marked with 75% humidity, and average temperatures of 79°F along the coast (average daytime temps of 88°F and evening temperatures of 71°F). In the lowlands during the rainy season months of May through November, 157 inches of rain falls annually. On the Osa Peninsula, more than 16.4 feet of rain falls annually. 

This region maintains an average humidity of 75% during the dry season, escalating slightly during the rainy season, and reaching 90% in July, October and December. Strangely enough, late June or July typically experiences a little dry season with a dramatic decrease in rain, but it is still one of the most humid months. 

Corcovado

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.mm%
Jan. 91 33 72 22 6.26 159 n/a
Feb. 92 33 71 22 5.75 146 n/a
Mar. 92 33 73 23 8.07 205 n/a
Apr. 91 33 73 23 11.02 280 n/a
May 90 32 73 23 18.9 480 n/a
Jun. 89 32 72 22 17.48 444 n/a
Jul. 89 32 71 22 18.9 480 n/a
Aug. 89 32 71 22 20.91 531 n/a
Sep. 90 32 71 22 21.97 558 n/a
Oct. 89 32 71 22 27.68 703 n/a
Nov. 89 32 71 22 22.28 566 n/a
Dec. 90 32 71 22 11.57 294 n/a

Golfito

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.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

Palmar Sur

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.mm%
Jan. 91 33 69 21 1.97 50 84
Feb. 91 33 59 15 2.09 53 83
Mar. 93 34 71 22 3.82 97 83
Apr. 91 33 71 22 8.86 225 86
May 89 32 71 22 16.61 422 89
Jun. 89 32 71 22 16.06 408 89
Jul. 89 32 71 22 14.57 370 89
Aug. 87 31 89 32 16.3 414 89
Sep. 87 31 71 22 19.49 495 90
Oct. 87 31 71 22 23.5 597 91
Nov. 87 31 71 22 13.78 350 90
Dec. 89 32 71 22 4.17 106 87

Source: National Weather Services of Costa Rica

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