Last updated: August 21, 2025
June in San Jose, Costa Rica offers a unique blend of temperatures and atmospheric conditions, making it a month of vivid contrasts. With a maximum temperature reaching a comfortable 26°C (78°F) and an average hovering around 19°C (67°F), the weather invites outdoor exploration while maintaining a pleasant ambiance. However, this month also witnesses significant precipitation, with a staggering 341 mm (13.4 in) of rain falling over 28 days, leading to a lush and vibrant landscape. The high humidity level of 84% adds to the tropical experience, enveloping the city in a moist warmth that highlights its natural beauty. Visitors and residents alike can expect a dynamic climate, perfect for enjoying the rich biodiversity and cultural offerings of this stunning Central American gem.
In June, San Jose, Costa Rica experiences mild temperatures, making it a comfortable time to explore the city. The month's average temperature hovers around 19°C (67°F), with daytime highs reaching 26°C (78°F). As the rainy season begins, nighttime lows gradually rise to about 15°C (59°F), providing relief from the cool evening air. This marks a slight increase in temperatures compared to the earlier months, where January through May showcased cooler averages. With pleasantly warm days and just a hint of humidity, June sets the stage for captivating tropical experiences, setting a vibrant atmosphere for both locals and visitors alike.
In June, San Jose, Costa Rica, experiences a significant amount of rainfall, totaling 341 mm (13.4 in), making it one of the wettest months of the year. With 28 days of recorded precipitation, the city is deeply entrenched in the rainy season, following the deluge of 425 mm (16.7 in) seen in May. This sustained wet pattern continues as the city transitions into July, where an ample yet slightly reduced precipitation of 266 mm (10.5 in) is expected. The consistent rainfall witnessed from June to September highlights a clear trend of increasing precipitation, underscoring San Jose’s tropical climate and the vital role of these rainy months in replenishing the region’s lush greenery and water resources.
In June, San Jose, Costa Rica experiences a significant rise in humidity, reaching an impressive 84%. This marks a noticeable increase from the subtropical dry spell of the earlier months, where humidity levels hovered in the mid to high 60s. As the rainy season unfolds, this spike in humidity indicates a shift from the drier conditions of the beginning of the year. The increase continues into July, peaking at 85%, before gradually declining through the late months of the year. This pattern highlights a typical trend in San Jose, where the lush green landscapes thrive under these humid conditions, making June a key month in the city's vibrant ecosystem.
In June, San Jose, Costa Rica, maintains a consistently high UV Index, recorded at 14, which falls into the extreme exposure category. This trend mirrors the UV readings from May and the preceding months, where values ranged from 12 to 16, highlighting the persistent intensity of the sun during this time. Notably, with a swift burn time of just 10 minutes, it’s crucial for residents and visitors alike to take precautions. As we move through the rainy season, the level may slightly fluctuate, but the overall pattern indicates that sun safety remains essential. For detailed information on protecting yourself from UV exposure, visit San Jose UV Index.
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In June, San Jose, Costa Rica experiences a transition into the lush greenery of the wet season, receiving about 244 hours of sunshine. While this marks a dip compared to the vibrant 329 hours of sunlight in March and the 303 hours in April, it is still a delightful respite amidst the cooler, rain-kissed days. June sets the stage for a gradual decline in sunlight through July and August, but it can bring a unique charm to the city as the rain fosters life and vibrancy. This month beautifully showcases the balance between sunshine and rain that defines the tropical climate, emphasizing that even with fewer sunny hours, there's a captivating beauty to behold in the lush landscapes.
In San Jose, Costa Rica, the likelihood of sunny weather experiences a notable decline leading into the June months, with sunny conditions dropping to just 13%. This marks a stark contrast to the earlier part of the year, where months like January boast a 47% chance of sunshine. As the dry season gives way to the rainy season, the sun becomes increasingly elusive; April and May see figures plummet to 16% and 12%, respectively. Following June, the probability shows a slight rebound in July but remains relatively low. Those planning a visit during this period should brace for the possibility of rain, as the lush landscape is nourished, but be prepared for only a scant chance of sunny skies.
In June, San Jose, Costa Rica, basks in a consistent 12 hours of daylight, reflecting a smooth transition into the mid-year months. This extended daylight, which begins in March and lingers through August, creates an inviting atmosphere for outdoor adventures and vibrant cultural experiences. The slight ebb in daylight during the rest of the year, falling to 11 hours in January, February, October, November, and December, contrasts with the summer-like brightness of the mid-year months. This stability in daylight duration provides residents and visitors alike with an ideal backdrop to explore the lush landscapes and rich biodiversity that Costa Rica is renowned for.
In June, San Jose, Costa Rica, experiences its calmest winds of the year, with an average speed of just 1.3 m/s (3 mph). This slight dip in wind activity marks a notable transition from the breezier months earlier in the year. Following May, which recorded 1.6 m/s (4 mph), June offers a tranquil yet refreshing escape as the dry season eases towards the onset of the rainy months. As we move deeper into the year, the winds continue to mellow, with July and August also maintaining similar gentle breezes. This trend creates a serene atmosphere, perfect for enjoying the lush landscapes and vibrant culture of the city, even as the bustling energy of the rainy season approaches.
Weather in San Jose varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in San Jose, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between June and January, June tends to be warmer with average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 26°C (78°F). The month experiences significant precipitation, totaling 341 mm (13.4 in) over 28 days, accompanied by a high humidity level of 84%. In contrast, January is cooler with average temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (76°F). It sees much less rainfall, with only 93 mm (3.7 in) over just 11 days and a lower humidity of 68%. For more detailed information on January weather, you can visit San Jose weather in January.
June and February present quite distinct weather patterns. In June, temperatures range from a minimum of 15°C (59°F) to a maximum of 26°C (78°F), with an average of 19°C (67°F). This month is characterized by high humidity at 84% and notable precipitation of 341 mm (13.4 in) spread over 28 days, making it quite a wet time of year. In contrast, February offers milder temperatures with a minimum of 11°C (52°F) and a maximum of 25°C (78°F), averaging 17°C (64°F). The humidity is lower at 68%, and it experiences significantly less rainfall, with only 43 mm (1.7 in) across 12 days. For more details about February weather specifically, you can check San Jose weather in February.
June and March exhibit notable differences in weather patterns. June experiences a warmer temperature range with a minimum of 15°C (59°F) and a maximum of 26°C (78°F), while March features slightly cooler temperatures, ranging from 11°C (53°F) to 25°C (76°F). Additionally, June is significantly wetter, with 341 mm (13.4 in) of precipitation over 28 days compared to March's 49 mm (1.9 in) over just 14 days. The humidity levels also reflect this contrast, as June's humidity averages 84%, contrasting with March's 66%. For more detailed information, check out San Jose weather in March.
When comparing the weather in June and April, both months exhibit similar average temperatures, hovering around 19°C (66°F). However, June tends to be noticeably wetter, with a significant increase in precipitation, totaling 341 mm (13.4 in) across 28 days, compared to April's 113 mm (4.4 in) over 23 days. Additionally, June has a higher humidity level of 84%, making it feel more humid than April's 67%. Therefore, while temperatures remain relatively stable, June's weather is characterized by greater rainfall and humidity. For more detailed insights, you can check San Jose weather in April.
In comparing the weather between June and May, both months offer similar average temperatures, hovering around 19°C (67°F), with maximums reaching 26°C (78°F). However, June experiences slightly higher humidity at 84%, compared to May's more comfortable 69%. When it comes to precipitation, June sees a notable decrease with 341 mm (13.4 in) over 28 days, while May is wetter, accumulating 425 mm (16.7 in) across 29 days. For more detailed information, you can check out San Jose weather in May.
June and July exhibit quite similar weather patterns, with both months experiencing a minimum temperature of 15°C (59°F) and an average temperature around 19°C (66-67°F). However, July sees a slight decrease in maximum temperature, reaching only 25°C (77°F) compared to June's peak of 26°C (78°F). Precipitation also decreases in July to 266 mm (10.5 in) from June's 341 mm (13.4 in), while the number of rainy days remains constant at 28. Humidity levels are slightly higher in July at 85%, compared to June's 84%. For more detailed information, you can check San Jose weather in July.
In comparing the weather between June and August, both months feature similar temperature ranges, with minimums of 15°C (59°F), average temperatures around 19°C (67°F), and maximums reaching 26°C (79°F). However, June tends to be slightly wetter, experiencing 341 mm (13.4 in) of precipitation compared to August's 304 mm (12.0 in), with both months seeing rainfall on approximately 28 days. Humidity levels are marginally higher in June at 84%, compared to 82% in August. For more detailed information, you can check out San Jose weather in August.
When comparing the weather in June and September, we see that both months have similar average temperatures, with June averaging 19°C (67°F) and September slightly cooler at 19°C (66°F). June features a higher maximum temperature of 26°C (78°F) compared to September's max of 25°C (78°F). However, September experiences more precipitation, totaling 379 mm (14.9 in) over 29 days, while June has 341 mm (13.4 in) across 28 days. Humidity levels are relatively high in both months, peaking at 84% in June and slightly lower at 81% in September. For more insights into September weather specifically, visit San Jose weather in September.
June and October in San Jose present relatively mild temperatures, with June averaging 19°C (67°F) and October slightly lower at 19°C (66°F). Although both months experience similar high temperatures, June's maximum reaches 26°C (78°F) while October's max is slightly lower at 25°C (78°F). Precipitation, however, shows a notable increase in October, with 517 mm (20.4 in) compared to June's 341 mm (13.4 in) over similar numbers of days, resulting in a wetter atmosphere. Humidity remains high in both months, at 84% in June and 80% in October, making for a consistently humid climate. For more detailed information, you can check San Jose weather in October.
June and November in San Jose exhibit similar weather patterns, but with some notable differences. June tends to be slightly warmer, with average temperatures ranging from a minimum of 15°C to a maximum of 26°C, while November sees temperatures ranging from 14°C to 24°C. Both months experience significant rainfall, but June is notably wetter, with 341 mm of precipitation over 28 days compared to November's 260 mm over 24 days. Humidity remains high in both months, with June at 84% and November at 80%. For more detailed information, you can check San Jose weather in November.
June and December present contrasting weather patterns. In June, temperatures range from a minimum of 15°C (59°F) to a maximum of 26°C (78°F), with an average of 19°C (67°F). The month is typically marked by heavy rainfall, accumulating 341 mm (13.4 in) over 28 days, coupled with high humidity at 84%. In contrast, December experiences slightly milder temperatures, with a minimum of 12°C (55°F), an average of 18°C (64°F), and a maximum of 24°C (75°F). Precipitation is significantly lower at 156 mm (6.1 in) across 16 days, and humidity drops to 72%. For more details on December weather, visit San Jose weather in December.
As June rolls into San Jose, it brings a distinct shift in weather compared to the rest of the year. With higher humidity levels, the air feels notably warmer, and the frequent rainfall transforms the landscape into a lush, green paradise. This month typically witnesses a spike in precipitation, making it one of the wetter periods. While temperatures remain mild, the combination of cloudy skies and occasional sun creates a unique charm that characterizes the region's climate. For more insights into how June's weather fits into the broader patterns, explore the full details at San Jose Climate.