Last updated: August 21, 2025
April in San Jose, Costa Rica, offers a vibrant transition into the wet season, with average temperatures hovering around 26°C (78°F). Daily highs reach up to a comfortable 30°C (87°F), while nighttime lows dip to 22°C (71°F), creating a pleasant climate for exploration. Throughout the month, humidity levels stay at a tropical 63%, contributing to the lush greenery that characterizes this beautiful region. However, visitors should be prepared for the 75 mm (2.9 in) of precipitation spread over approximately 19 days, making it the perfect time to experience the stunning rainforests and rich biodiversity of Costa Rica amidst the refreshing April showers.
In April, San Jose, Costa Rica, experiences a lovely transition as temperatures continue to rise, offering a delightful taste of warmth before the upcoming rainy season. The month kicks off with minimum temperatures around 22°C (71°F), providing a comfortable start to the day, while averaging 26°C (78°F) during the day and peaking at a striking 30°C (87°F). This slight increase in warmth from the previous months signals the region's unique blend of tropical charm and mild highland climate. Visitors can revel in pleasant afternoons perfect for exploring the vibrant city, while evenings invite a refreshing breeze, making April an ideal month for outdoor activities in this picturesque Central American destination.
In April, San Jose, Costa Rica experiences a noticeable shift in precipitation dynamics, with 75 mm (2.9 in) of rain falling over 19 days. This marks a significant dip compared to the heavy downpours characteristic of the following months, particularly May and June, when rainfall can exceed 297 mm and 337 mm respectively. The transition into April indicates an easing into the wet season, where brief, sporadic showers become prevalent, as residents and visitors alike anticipate the lush transformations that May will bring. This month serves as a bridge, hinting at the intense rainy season ahead while still enjoying relatively milder, drier days.
In April, San Jose, Costa Rica, experiences a pleasant humidity level of 63%, consistent with the slightly drier months of February and March. This moderate humidity contributes to a comfortable climate as the city transitions into the wetter season. Following April, however, a noticeable spike occurs in June, with humidity surging to 74%, and continues to climb throughout the summer months, reaching a peak in July at 85%. Overall, April represents a stable period before the humidity escalates significantly, allowing residents and visitors to enjoy the capital's lush landscapes without the muggy intensity of the later months.
April in San Jose, Costa Rica, sees a UV Index of 14, maintaining its status in the extreme exposure category and a consistent burn time of just 10 minutes. This trend of high UV levels began earlier in the year, with January's index at 11, and the numbers have only climbed higher, peaking in April alongside March and May. Such consistency indicates that, regardless of the month, residents and visitors should remain vigilant about sun protection, as these elevated levels can lead to severe sunburn with minimal exposure. To delve deeper into UV trends and stay informed, check out San Jose UV Index.
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As April unfolds in San Jose, Costa Rica, residents and visitors alike can bask in the radiant glow of 325 hours of sunshine—one of the month’s highlights. This sunny spell follows a robust March, where the city enjoyed an impressive 332 hours, hinting at the region's gradual transition into the dry season. Although April doesn't quite reach the peak of March, it maintains a vibrant average that outshines the previous months of the year. This warm trend continues to rise through the month, offering a delightful blend of warmth and nature’s beauty that beckons outdoor enthusiasts to explore the lush landscapes and lively culture. The consistent quality of sunshine not only ensures a pleasant atmosphere but also sets the stage for an enjoyable start to summer in this beautiful Central American locale.
April in San Jose, Costa Rica, marks a distinct transition into the rainy season, with the likelihood of sunny weather dipping to 29%. This reduction follows a relatively sunnier March, where the chances lingered at 47%, and highlights a general downward trend from January's 40% and February's 51%, the peak of the dry season. As the region approaches May, known for even less sunshine at 23%, it's evident that nature begins to prepare for the lush greenery that follows the rains. Overall, April serves as a gentle reminder that while sun-filled days are fewer, the beauty of Costa Rica's vibrant landscapes soon flourishes with the arrival of the wet season.
In April, San Jose, Costa Rica, basks in 12 hours of daylight, continuing the trend established in March and extending through the following months of May and June. This extended daylight period offers a vibrant atmosphere as the country transitions fully into its lush, green rainy season. From January to February, daylight starts at a consistent 11 hours, gradually increasing to 12 hours by March, marking a shift that paves the way for longer evenings filled with the sounds of the tropics. As the month of April embarks on this trend, it not only enhances outdoor activities but also enriches the local culture, inviting both locals and visitors to enjoy the beautiful landscapes longer under the warm Costa Rican sun.
In April, the winds in San Jose, Costa Rica begin to soften, with an average speed of 4.5 m/s (10 mph), matching the breezy calm of May. This slight dip follows a turbulent March, where gusts reached 5.7 m/s (13 mph), signaling a transition into the more tranquil dry season. With the average wind speed decreasing from early months, such as January's 5.6 m/s (12 mph), April offers a gentler breath of air, inviting residents and visitors alike to enjoy the lush landscapes and vibrant culture in pleasantly mild conditions. As the month progresses towards May, the consistency of the winds maintains an ideal atmosphere for outdoor adventures, showcasing the beauty of Costa Rica's transition into a serene dry spell.
Weather in San Jose varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in San Jose, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of April and January, we see that April generally enjoys slightly warmer temperatures, with a minimum of 22°C (71°F) and an average of 26°C (78°F), while January features a minimum of 20°C (68°F) and an average of 24°C (75°F). April experiences less precipitation overall, with 75 mm (2.9 in) falling over 19 days, compared to January's higher total of 148 mm (5.8 in) over 22 days. Both months have similar humidity levels, with April at 63% and January slightly higher at 66%. For more details, you can check San Jose weather in January.
In comparing the weather between April and February, we see that April tends to be warmer, with temperatures ranging from a minimum of 22°C (71°F) to a maximum of 30°C (87°F). In contrast, February has slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 28°C (83°F). Both months experience a significant amount of rain, but February has higher precipitation at 96 mm (3.8 in) over 20 days compared to April's 75 mm (2.9 in) over 19 days. Humidity levels are comparable, with April at 63% and February slightly higher at 64%. For further details, you can check San Jose weather in February.
In comparing the weather of April and March, we see that April is slightly warmer, with average temperatures ranging from a minimum of 22°C (71°F) to a maximum of 30°C (87°F), while March has a lower average, with temperatures from 21°C (69°F) to 28°C (83°F). Additionally, April experiences less rainfall, totaling 75 mm (2.9 in) over 19 days, compared to March's 102 mm (4.0 in) across 23 days. Both months share similar humidity levels at 63%, indicating a consistently humid climate. For a more detailed view of March weather, you can visit San Jose weather in March.
In comparing the weather between April and May, both months share similar temperature ranges, with minimums around 22°C (71°F), averages at 26°C (78°F), and maximums peaking at approximately 30°C (87°F in April and 85°F in May). However, a stark contrast is evident in precipitation levels. April experiences a total of 75 mm (2.9 in) of rain over 19 days, while May sees a significant increase, with 297 mm (11.7 in) falling over 28 days. Despite the consistency in temperature and humidity, May is notably wetter, impacting outdoor activities. For more detailed information on May weather, you can check San Jose weather in May.
April and June both feature warm temperatures, with April recording an average of 26°C (78°F) and June slightly lower at 25°C (78°F). However, June experiences significantly more precipitation, with a total of 337 mm (13.3 in) spread over 30 days, compared to April's 75 mm (2.9 in) over 19 days. Additionally, humidity levels rise from 63% in April to 74% in June, making June feel more humid despite its slightly cooler average temperature. For more details about the weather in June, you can refer to San Jose weather in June.
When comparing the weather in April and July, we see notable differences in temperature and precipitation. In April, the temperatures range from a minimum of 22°C (71°F) to a maximum of 30°C (87°F), with an average of 26°C (78°F). The month experiences moderate rainfall, accumulating about 75 mm (2.9 in) over approximately 19 days, with a humidity level of 63%. In contrast, July is cooler, with similar minimum temperatures but a lower maximum of 28°C (84°F) and an average of 25°C (77°F). However, it significantly increases in rainfall, reaching 270 mm (10.6 in) over 30 days, and humidity rises to 85%. For more detailed information on July weather, visit San Jose weather in July.
April and August exhibit distinct weather patterns, though both months feature warm temperatures. In April, the minimum temperature hovers around 22°C (71°F), with an average of 26°C (78°F) and a maximum reaching 30°C (87°F). Precipitation in April is moderate, with 75 mm (2.9 in) falling over 19 days, accompanied by a humidity level of 63%. In contrast, August experiences slightly cooler average temperatures, with a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 29°C (85°F). However, it is significantly wetter, receiving 286 mm (11.2 in) of rain over all 30 days of the month, leading to higher humidity at 82%. For more information, you can check San Jose weather in August.
April and September exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 22°C (71°F) to a maximum of 30°C (87°F), with an average of 26°C (78°F). The month experiences approximately 75 mm (2.9 in) of precipitation over 19 days and a humidity level of 63%. In contrast, September sees a slightly cooler average temperature of 25°C (78°F), with highs of 29°C (84°F) and the same minimum of 22°C (73°F). However, it is significantly wetter, with 272 mm (10.7 in) of rainfall spread across 29 days, resulting in higher humidity levels at 80%. For more details, you can visit San Jose weather in September.
April and October in San Jose offer a unique contrast in weather patterns. While April sees average temperatures ranging from a minimum of 22°C (71°F) to a maximum of 30°C (87°F) with a moderate humidity of 63%, October experiences slightly cooler temperatures, with averages between 22°C (72°F) and 28°C (83°F), accompanied by higher humidity at 79%. Precipitation is markedly different; April has about 75 mm (2.9 in) of rain spread over 19 days, whereas October faces a significant increase with 387 mm (15.2 in) falling across 28 days. For more detailed insights into the climate, visit San Jose weather in October.
April and November exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 22°C (71°F) to a maximum of 30°C (87°F), with an average of 26°C (78°F) and a moderate level of humidity at 63%. Rainfall is relatively lower, totaling 75 mm (2.9 inches) over 19 days. In contrast, November sees slightly cooler temperatures with a minimum of 22°C (72°F), an average of 24°C (76°F), and a maximum of 28°C (82°F). However, it experiences significantly higher precipitation, with 306 mm (12.0 inches) spread across 28 days and increased humidity at 79%. This shift makes November distinctly wetter and more humid compared to the drier conditions of April. For more detailed information, you can visit San Jose weather in November.
April typically offers warmer temperatures than December, with an average of 26°C (78°F) compared to December's average of 24°C (75°F). However, December experiences significantly higher precipitation, totaling 212 mm (8.3 in) over 27 days, in contrast to April's 75 mm (2.9 in) across 19 days. Humidity levels are also slightly higher in December at 70%, compared to April's 63%. For more detailed insights, you can check San Jose weather in December.
As April unfolds in San Jose, it brings a distinctive weather profile that sets it apart from other months. The warm temperatures offer a delightful blend of average highs around 26°C (78°F) amid a backdrop of increased humidity at 63%, providing a tropical feel. This month is also characterized by its frequent rainfall, with precipitation gracing the city on nearly two-thirds of the days, accumulating to about 75 mm (2.9 in). This combination of warmth and moisture not only enhances the lush surroundings but also contributes to vibrant landscapes, making April a month of transformation. For a deeper dive into the weather patterns you can expect year-round, visit San Jose Climate.