Climate Insights for Chamorro

Costa Rica

Hottest
May
31°C peak88°F peak
Coldest
January
22°C low71°F low
Wettest
November
389 mm rain15.3 in rain
Best to Visit
February
Mild temps & low rain

Climate Overview

The climate in Chamorro is hot. The average annual temperature is 26°C and approximately 2,889 mm of precipitation falls per year. Chamorro receives a notable amount of rainfall throughout the year, including during its driest month. Chamorro is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, September. The coldest months are January, February, March, when temperatures can drop to 22°C.The climate in Chamorro is hot. The average annual temperature is 78°F and approximately 113.7 in of precipitation falls per year. Chamorro receives a notable amount of rainfall throughout the year, including during its driest month. Chamorro is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, September. The coldest months are January, February, March, when temperatures can drop to 71°F.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 28°Average: 25°Min: 22°FebMax: 28°Average: 25°Min: 22°MarMax: 30°Average: 26°Min: 22°AprMax: 31°Average: 26°Min: 23°MayMax: 31°Average: 27°Min: 24°JunMax: 30°Average: 26°Min: 24°JulMax: 30°Average: 26°Min: 24°AugMax: 31°Average: 26°Min: 23°SepMax: 31°Average: 26°Min: 23°OctMax: 30°Average: 26°Min: 23°NovMax: 29°Average: 25°Min: 23°DecMax: 28°Average: 25°Min: 22°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 82°FAverage: 76°FMin: 71°FFebMax: 83°FAverage: 77°FMin: 71°FMarMax: 85°FAverage: 78°FMin: 72°FAprMax: 88°FAverage: 80°FMin: 73°FMayMax: 88°FAverage: 80°FMin: 75°FJunMax: 87°FAverage: 79°FMin: 75°FJulMax: 86°FAverage: 79°FMin: 74°FAugMax: 87°FAverage: 79°FMin: 74°FSepMax: 88°FAverage: 79°FMin: 74°FOctMax: 86°FAverage: 79°FMin: 74°FNovMax: 84°FAverage: 78°FMin: 73°FDecMax: 83°FAverage: 77°FMin: 72°F
Max
Average
Min

Chamorro has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 22°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.Chamorro has relatively stable temperatures year-round, staying within a 17°F range. The warmest month is May, when average highs reach 88°F and the mean temperature sits around 80°F. January is the coolest month, with minimum temperatures around 71°F and an average of 76°F. Daily temperature variation is modest, with an average difference of 12°F between highs and lows.

Precipitation

0mm50mm100mm150mm200mm250mm300mm350mm400mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 157mmFebPrecipitation: 84mmMarPrecipitation: 69mmAprPrecipitation: 98mmMayPrecipitation: 240mmJunPrecipitation: 367mmJulPrecipitation: 340mmAugPrecipitation: 285mmSepPrecipitation: 273mmOctPrecipitation: 346mmNovPrecipitation: 389mmDecPrecipitation: 241mm
Precipitation
0in2in4in6in8in10in12in14in16inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 6.2inFebPrecipitation: 3.3inMarPrecipitation: 2.7inAprPrecipitation: 3.9inMayPrecipitation: 9.4inJunPrecipitation: 14.5inJulPrecipitation: 13.4inAugPrecipitation: 11.2inSepPrecipitation: 10.8inOctPrecipitation: 13.6inNovPrecipitation: 15.3inDecPrecipitation: 9.5in
Precipitation

Chamorro is a very wet location, receiving approximately 2,889 mm of precipitation annually, which averages out to around 241 mm per month. The wettest month is November, averaging 389 mm of rainfall. June and October also tend to see above-average precipitation. The driest month is March, with just 69 mm. That's 321 mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Chamorro is a very wet location, receiving approximately 113.7 in of precipitation annually, which averages out to around 9.5 in per month. The wettest month is November, averaging 15.3 in of rainfall. June and October also tend to see above-average precipitation. The driest month is March, with just 2.7 in. That's 12.6 in less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h5km/h10km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 9km/hFebWind Speed: 10km/hMarWind Speed: 10km/hAprWind Speed: 9km/hMayWind Speed: 6km/hJunWind Speed: 5km/hJulWind Speed: 7km/hAugWind Speed: 6km/hSepWind Speed: 4km/hOctWind Speed: 4km/hNovWind Speed: 5km/hDecWind Speed: 8km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 6mphFebWind Speed: 6mphMarWind Speed: 6mphAprWind Speed: 5mphMayWind Speed: 4mphJunWind Speed: 3mphJulWind Speed: 4mphAugWind Speed: 4mphSepWind Speed: 3mphOctWind Speed: 2mphNovWind Speed: 3mphDecWind Speed: 5mph
Wind Speed

Chamorro is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 6km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 9km/h in winter, 8km/h in spring, 6km/h in summer, 5km/h in autumn.Chamorro is mildly breezy, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 4mph difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 6mph in winter, 5mph in spring, 4mph in summer, 3mph in autumn.

Best Time to Visit

Jan25°76°F
Feb25°77°F
Mar26°78°F
Apr26°80°F
May27°80°F
Jun26°79°F
Jul26°79°F
Aug26°79°F
Sep26°79°F
Oct26°79°F
Nov25°78°F
Dec25°77°F

The best time to visit Chamorro is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 84 mm per month. By contrast, May can be uncomfortably hot with highs reaching 31°C, while January is the coldest period with lows dropping to 22°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Chamorro is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 77°F with modest rainfall averaging 3.3 in per month. By contrast, May can be uncomfortably hot with highs reaching 88°F, while January is the coldest period with lows dropping to 71°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Chamorro based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Chamorro based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
22 °C71 °F
28 °C82 °F
9 km/h6 mph
157 mm6.2 in
0 cm0 in
Feb
22 °C71 °F
28 °C83 °F
10 km/h6 mph
84 mm3.3 in
0 cm0 in
Mar
22 °C72 °F
30 °C85 °F
10 km/h6 mph
69 mm2.7 in
0 cm0 in
Apr
23 °C73 °F
31 °C88 °F
9 km/h5 mph
98 mm3.9 in
0 cm0 in
May
24 °C75 °F
31 °C88 °F
6 km/h4 mph
240 mm9.4 in
0 cm0 in
Jun
24 °C75 °F
30 °C87 °F
5 km/h3 mph
367 mm14.5 in
0 cm0 in
Jul
24 °C74 °F
30 °C86 °F
7 km/h4 mph
340 mm13.4 in
0 cm0 in
Aug
23 °C74 °F
31 °C87 °F
6 km/h4 mph
285 mm11.2 in
0 cm0 in
Sep
23 °C74 °F
31 °C88 °F
4 km/h3 mph
273 mm10.8 in
0 cm0 in
OctCurrent
23 °C74 °F
30 °C86 °F
4 km/h2 mph
346 mm13.6 in
0 cm0 in
Nov
23 °C73 °F
29 °C84 °F
5 km/h3 mph
389 mm15.3 in
0 cm0 in
Dec
22 °C72 °F
28 °C83 °F
8 km/h5 mph
241 mm9.5 in
0 cm0 in