The climate of San Pedro
San Pedro, set in the heart of
Costa Rica, is governed by an Am climate under the Köppen climate classification. This denotes a tropical monsoon climate that controls the town's weather paradigms throughout the year. A glance at the year-round weather data reveals the climate story of San Pedro.
Temperature variations manifest a narrow range throughout the year, with average maximum temperatures flowing from 23.9°C (75°F) in the colder month of
January, to the pinnacle of 26°C (78.8°F) in the heightened warmth of
April. The town experiences an average minimum temperature fluctuating between 13.8°C (56.8°F) to 17°C (62.6°F). The data reveals a temperate year-round climate, never too cold, yet not excessively hot either.
Humidity pervades the atmosphere of San Pedro, bouncing around an average relative value of 75% to 91%. This level of humidity is expecting in a Tropical Monsoon climate, making the atmosphere perceptibly moist, especially from
May to
October.
Distinguishing San Pedro's weather is a prolific amount of rain. The town receives most rainfall from May to October, a deluge averaging between 301mm (11.85") and a peak of 438mm (17.24") in October. Correspondingly, these months also experience the greatest number of rainfall days, nearing a full month. Conversely, rainfall ebbs considerably from January to April, averaging from 26mm (1.02") to 100mm (3.94") only.
Despite the extensive rains, San Pedro enjoys a healthy daylight of about 11.6 to 12.7 hours throughout the year. Correspondingly, the average hours of sunshine range from a minimum of 5.8 hours in October to maximum of 9.2 hours in
February.
The best time to visit San Pedro
Mindful of the data, the optimal period to visit
San Pedro would be between
January and
April. These months offer the most temperate weather conditions, with maximum temperatures not exceeding 26°C (78.8°F) and minimum temperatures stayed above 13.8°C (56.8°F). Low rainfall experienced during these months, falling between 26mm (1.02") in
February and reaching a maximum of 100mm (3.94") in April. The reduced rainfall brings a dip in humidity to a comfortable 75% in February and
March. The presence of sunshine, with an average of 8.9 to 9.2 hours translating into more daylight for touristic activities makes visiting between these months best.
The worst time to visit San Pedro
The months of
September and
October are the least favorable time for a visit. These months represent peak monsoon with rainfall spiking to 438mm (17.24") in October and monsoon days numbering around 30. Humidity intensifies, reaching 91% during these months and sunshine hours recede to just approximately 5.8 and 6.5 hours respectively.
Spring weather in San Pedro
In
San Pedro, spring unfolds from
March to
May. These months bring mild temperature shifts, with highs averaging between 25.8°C (78.4°F) to 26°C (78.8°F) and lows ranging from 15.9°C (60.6°F) to 16.9°C (62.4°F). Rainfall starts to escalate during these months, with
April marking the onset of the rainy season. Humidity levels start to rise in May, reaching 86%.
Summer weather in San Pedro
Summer extends from
June to
August in
San Pedro. This season is characterized by a significant increase in rainfall with averages between 301mm (11.85") and 378mm (14.88"). Correspondingly, humidity climbs further, reaching an average of 90% in June and
July. Despite this, temperatures remain fairly constant with highs averaging at 23.3°C (73.9°F) and lows around 15.8°C (60.4°F).
Autumn weather in San Pedro
San Pedro welcomes Autumn from
September to
November. These months carry the highest rainfall amounts, reaching a peak of 438mm (17.24") in
October. Humidity can reach an intense 91% in September and October. Average temperatures drop slightly, with highs of 23°C (73.4°F) in September and 22.7°C (72.9°F) in November and lows moving between 16.4°C (61.5°F) to 15.2°C (59.4°F).
Winter weather in San Pedro
Winter arrives in
December and stays on until
February. The beginning of winter marks a significant decrease in rainfall, with monthly averages falling between 65mm (2.56") and 32mm (1.26"). The relative humidity levels drop due to the decline in rainfall, falling to 84%. Regular temperatures range from 22.4°C (72.3°F) to 25°C (77°F) for the highs, and for the lows temperatures range from 14°C (57.2°F) to 16.9°C (62.4°F) in February.
Weather in January
January in
San Pedro,
Costa Rica, typically presents mild conditions with occasional downpours. The weather reveals temperatures slightly cooler, from 13.8°C (56.8°F) to 23.9°C (75°F), compared to the following month. Humidity is relatively high, at an average of 78%, creating a tropical climate conducive to outdoor activities.
Weather in January » Weather in February
The weather in
February remains mainly consistent with the one observed in
January. Yet, rainfall decreases with lighter showers dispersed throughout the month.
San Pedro's weather conditions still remain conducive to outdoor activities with longer daylight hours.
Weather in February »Weather in March
Moving into
March, the weather patterns show a slight increase in average temperatures. The escalation in the cloud cover to 34% results in more diffused sunlight during the day. Yet, the UV index remains the same, denoting consistent solar exposure.
Weather in March »
Weather in April
The
April weather transforms significantly in
San Pedro, as evident from the sharp increase in rainfall to 100mm (3.94"). Despite the more frequent showers, temperatures remain relatively high and humidity elevates to 78%. The city experiences fewer daylight hours and reduced sunshine duration in the month.
Weather in April »Weather in May
May brings with it the peak wet period in
San Pedro, marked by a considerable increase in rainfall to 369mm (14.53"). Higher levels of humidity, reaching 86%, combine with the steadily warming temperatures to lay the foundation for this month's weather character.
Weather in May » Weather in June
June's weather in
San Pedro presents almost similar conditions as observed in
May. It retains continuous rainfall, higher humidity levels, and reduced visibility due to the persistent cloud cover. Sunshine hours observe a minor decrease, resulting in marginally shorter days but the available daylight remains reasonably extensive.
Weather in June »
Weather in July
The
July weather conditions in
San Pedro follow the trend set by
June, especially in the realms of rainfall, humidity, and wind speed. Slight variations occur in temperature averages, signaling seasonal transitions. An increase of sunshine hours compared to previous months brings about longer daylight hours.
Weather in July »Weather in August
As
San Pedro moves into
August, the weather maintains the tropical climate with intense showers being a predominant feature. The temperature range continues a gradual drop, and relative humidity stabilizes at 89%. The cloud coverage remains the same, contributing to stably low visibility conditions.
Weather in August »Weather in September
The weather in
September remains similar to
August concerning temperature ranges, humidity, and rainfall. The months share characteristics of high cloud coverage resulting in similar visibility conditions. Despite these conditions, daylight hours register a slight decrease.
Weather in September »
Weather in October
Heading into
October, the weather in
San Pedro portrays the height of the rainy season, registering rainfall amounting to 438mm (17.24"). The temperature, humidity, and cloud coverage remain steady, resonating with the previous months.
Weather in October »Weather in November
November signals the start of the transition period where the weather conditions shift from the wet season towards drier conditions. Rainfall decreases to an average of 165mm (6.5"), considerably less than the prior month. Despite the lessened downpours, temperatures remain mild, maintaining the comfortable tropical weather.
Weather in November » Weather in December
The weather patterns in
December change significantly, with rainfall reducing further to 65mm (2.56"). A gradual increase in daylight hours and wind speeds signals the onset of the dry season. However, relative humidity remains relatively high, factoring in a touch of tropical weather.
Weather in December »