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North Pacific Region

Last Updated: Jul 28, 2012

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 - Costa Rica

The North Pacific Weather Region includes the Guanacaste Province, including Liberia and Tilaran, the cities of Orotina and San Mateo from the Alajuela Province and the northern part of the Province of Puntarenas from the river mouth of the Tarcoles River, north.  Also included in this region are: Playa del Coco, Playa Flamingo, Tamarindo, Nosara, Samara, Mal Pais and Montezuma. 

The average annual temperature in this climatic zone is 82°F, with the warmest month being April when temperatures can reach 100°F.  The rest of the year, daytime temperatures average 91°F.  The coolest nights are found between November and March, going down to an average of 66°F. 

The rainy season is clearly defined between the months of May through October, with the rainiest months being June, September and October. July tends to be the least rainy of the wet months. The rainy season has the highest relative humidity at 80 and 85% when compared to the rest of the year (only 60 to 65% humidity in the dry season).  Winds tend to be calm during the rainy season.  Despite all this rain there is still an average six hours of sun per day during the rainy season. 

November through April are the dry months, receiving almost no rain from December until March.  During the dry season and the el veranillo, winds tend to be predominately NE and max out at 7.5 mph.  Daytime temperatures hover around 89°-96°F with an average of ten hours of sunshine! 

Liberia

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.mm%
Jan. 91 33 69 21 0.04 1 66
Feb. 95 35 69 21 0.04 1 64
Mar. 95 35 71 22 0.35 9 61
Apr. 96 36 73 23 0.87 22 63
May 93 34 79 26 9.25 235 74
Jun. 89 32 73 23 12.28 312 84
Jul. 89 32 73 23 5.28 134 80
Aug. 89 32 73 23 8.11 206 82
Sep. 87 31 71 22 12.8 325 86
Oct. 87 31 71 22 11.22 285 87
Nov. 87 31 89 32 4.09 104 81
Dec. 88 31 89 32 0.51 13 72

Nicoya

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.mm%
Jan. 91 33 69 21 0.2 5 68
Feb. 93 34 71 22 0.43 11 63
Mar. 96 36 71 22 0.94 24 62
Apr. 96 36 73 23 2.72 69 64
May 91 33 73 23 10.79 274 78
Jun. 89 32 71 22 12.8 325 85
Jul. 89 32 71 22 9.61 244 81
Aug. 89 32 71 22 12.01 305 82
Sep. 87 31 71 22 15.71 399 87
Oct. 87 31 71 22 16.02 407 87
Nov. 87 31 69 21 12.44 316 81
Dec. 89 32 69 21 0.98 25 74

Santa Cruz

MonthAverage HighsAverage LowsAverage RainfallHumidity
 FCFCin.mm%
Jan. 92 33 72 22 0.23 6 65
Feb. 93 34 73 23 0.13 3.3 62
Mar. 95 35 74 23 0.28 7.3 62
Apr. 97 36 75 24 1.2 30.7 66
May 94 34 74 23 9.36 240 74
Jun. 90 32 73 23 11.44 293.4 81
Jul. 90 32 73 23 7.31 187.5 81
Aug. 90 32 73 23 9.54 244.5 83
Sep. 90 32 72 22 13.37 342.8 83
Oct. 89 32 72 22 13.65 350.1 83
Nov. 90 32 71 22 3.83 98.2 78
Dec. 90 32 71 22 0.64 16.4 68

Source: National Weather Services of Costa Rica

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