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North Pacific Region

North Pacific Region

The north Pacific weather region includes some of Costa Rica's most popular tourist destinations and the country's driest weather in a province known as Guanacaste.  Among the province's prominent towns are Playa del Coco, Playa Flamingo, Tamarindo, Nosara, Samara, Liberia and Tilaran. The north Pacific weather region also encompasses Orotina and San Mateo from the Alajuela province and the northern part of the Puntarenas province from the river mouth of the Tarcoles River. The average annual temperature in this weather region is 82 degrees, with April being the warmest month when temperatures can reach 100 degrees.  The rest of the year, daytime temperatures average 91 degrees.  The coolest nights are found between November and March, going down to an average of 66 degrees. 

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The dry season runs from November through April when the northern Pacific weather region receives almost no rain.  Daytime temperatures hover around 89 and 96 degrees with an average of ten hours of sunshine every day. During the dry season and a brief dry spell that occurs in July and August, winds from predominately northeast max out at 7.5 miles per hour.  

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

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