Last updated: August 21, 2025
In October, San Jose, Costa Rica experiences a warm and tropical climate characterized by a maximum temperature of 28°C (83°F) and an average of 25°C (77°F), complemented by a minimum of 22°C (72°F). This month is marked by high humidity levels averaging around 79%, creating a lush and vibrant atmosphere. However, visitors should be prepared for significant rainfall, with a total precipitation of 387 mm (15.2 in) spread over 28 days, making October one of the wettest months of the year. Despite the rainy weather, the rich greenery and lively local culture provide a unique and enchanting experience for those who explore this beautiful Central American city.
In October, San Jose, Costa Rica, enjoys a pleasant climate characterized by mild temperatures that create an inviting atmosphere for both locals and visitors. With nighttime lows around 22°C (72°F), the days are comfortably warm, peaking at a maximum of 28°C (83°F). The average temperature hovers around 25°C (77°F), making it one of the cooler months in the transitional wet season. As the rain subsides from the previous months, October offers a refreshing respite that hints at the start of drier conditions, making it an excellent time to explore the lush landscapes and vibrant culture of this beautiful city.
October marks a significant peak in precipitation for San Jose, Costa Rica, with an impressive 387 mm (15.2 in) of rainfall over 28 days. This increase is part of the country's vibrant green season, where the rains dramatically rise compared to previous months. After a series of wet months starting in May, October outpaces all others, reflecting the culmination of the rainy season. The frequent rainfall not only enhances the lush landscape but also sets the stage for the transition towards the drier months ahead. As the month unfolds, the persistent showers contribute to the area's rich biodiversity, making October a captivating time in this tropical paradise.
As October unfolds in San Jose, Costa Rica, the air remains comfortably humid with an average of 79%. This month continues a trend of higher humidity that begins in June, peaking in July at 85%. Following the rainy season, October's humidity reflects the lingering moisture, yet it drops slightly from September's 80%. Interestingly, as the year progresses from the drier months of January to April—where humidity hovers around 63-66%—the transition into late summer and early fall brings a noticeable increase. Overall, October's humidity level signals the shift towards a more tropical climate, offering a lush and vibrant backdrop to this beautiful city.
In October, San Jose, Costa Rica, continues to bask in a high UV Index of 13, which falls within the extreme exposure category, indicating the need for sun protection within just 10 minutes of exposure. This trend mirrors the preceding months of July, August, and September, where the UV Index remained consistently elevated at 13 or higher. Notably, from January to June, the UV Index peaked at 14, emphasizing the region's year-round susceptibility to intense solar radiation. As this month progresses, staying vigilant with sun safety measures is crucial, reinforcing the fact that the tropical climate maintains its relentless potency. For more information on the UV Index and how to protect yourself, check out San Jose UV Index.
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In October, San Jose, Costa Rica, enjoys a delightful 272 hours of sunshine, contributing to its reputation as a radiant destination year-round. As the rainy season begins to wind down, daylight hours remain abundant, making way for beautiful afternoons. Compared to previous months, October's sunlit hours show a slight decline from the peak achieved in March with 332 hours, but still radiate warmth and light that is typical for this vibrant city. Following a series of consistent sunny days through the summer, October's sunshine trends reflect a gradual tapering that lays the groundwork for a refreshing November, which picks up again with 298 hours of bright moments. Whether you're exploring lush landscapes or soaking in the culture, October's pleasant weather invites both locals and visitors to revel in the ever-present beauty of Costa Rica.
In October, San Jose, Costa Rica experiences a 25% chance of sunny weather, marking a slight improvement compared to the preceding months. Following a trend of lower sunshine during the rainy season, which peaks from June to September with chances as low as 9%, October begins to transition to drier conditions as the region gears up for a more favorable climate in the approaching months. Although the likelihood of sunshine increases relative to the prior few months, it remains modest compared to the peak sunny months of January and February, where the chance rises above 40%. Thus, October serves as a cool bridge between the heavier rains of the past and the sunnier days that follow, making it an intriguing time for visitors who don't mind the occasional showers.
In San Jose, Costa Rica, the daylight duration showcases a beautiful ebb and flow throughout the year. January and February each bask in 11 hours of sunlight, setting a consistent tone at the start of the year. As spring approaches in March, the days stretch slightly longer, offering 12 hours of daylight that persists through the delightful months of April, May, June, July, August, and September. However, as October arrives, the daylight dips back to 11 hours, echoing a gradual retreat towards the shorter days of November and December. This pattern highlights a rhythmic transition between the vibrant, sun-drenched seasons and the more subdued, cozy months of the year, making each phase a unique experience in this tropical paradise.
As October rolls into San Jose, Costa Rica, the gentle embrace of the winds marks a notable shift in the weather pattern. With an average wind speed of just 2.6 m/s (6 mph), October is notably calmer than the preceding months, reflecting a tranquil transition into the heart of the rainy season. This decrease follows a slight increase in wind speeds earlier in the year, peaking during the spring months of March and November, where gusts reach around 5.7 m/s (13 mph) and 4.6 m/s (10 mph), respectively. As the winds soften in October, they pave the way for the lush greenery that characterizes the Costa Rican landscape, inviting both locals and visitors to embrace the serene atmosphere that accompanies this tranquil month.
Weather in San Jose varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in San Jose, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present notably different weather patterns. In October, temperatures range from a minimum of 22°C (72°F) to a maximum of 28°C (83°F), with an average of 25°C (77°F). This month is characterized by high precipitation, totaling 387 mm (15.2 in) across 28 days, contributing to a humidity level of 79%. In contrast, January sees slightly cooler temperatures, with a minimum of 20°C (68°F) and a maximum of 27°C (82°F), yielding an average of 24°C (75°F). The rainfall is significantly lower at 148 mm (5.8 in) over 22 days, resulting in a more comfortable humidity level of 66%. For more detailed information, check out San Jose weather in January.
October and February both experience warm temperatures, with October's average at 25°C (77°F) and February slightly lower at 24°C (76°F). However, October is significantly wetter, receiving 387 mm (15.2 in) of precipitation over 28 days, compared to February's 96 mm (3.8 in) across 20 days. Humidity levels are also higher in October at 79%, while February enjoys a more comfortable 64%. For more detailed insights into February weather, you can visit San Jose weather in February.
In comparing the weather of October and March, both months experience similar maximum temperatures, reaching up to 28°C (83°F), but October tends to be slightly warmer overall, with an average of 25°C (77°F) compared to March's average of 24°C (76°F). October is significantly wetter, receiving 387 mm (15.2 in) of precipitation over 28 days, while March sees much less rainfall with only 102 mm (4.0 in) across 23 days. Additionally, October has a higher humidity level at 79%, whereas March's humidity is relatively lower at 63%. For more details on March weather, you can visit San Jose weather in March.
October and April present contrasting weather patterns despite their similar minimum temperatures. In October, the average temperature hovers around 25°C (77°F) with a higher maximum of 28°C (83°F); however, it is marked by significant rainfall, receiving 387 mm (15.2 in) over 28 days, contributing to a high humidity level of 79%. In contrast, April features a warmer average temperature of 26°C (78°F) and a higher maximum of 30°C (87°F) while experiencing much lighter rainfall at only 75 mm (2.9 in) across 19 days and a lower humidity of 63%. This makes April a more favorable month for outdoor activities compared to the wet and humid conditions in October. For a closer look at the weather in April, you can check out this link: San Jose weather in April.
When comparing the weather in October and May, both months present warm temperatures, with October experiencing a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 28°C (83°F). In contrast, May is slightly warmer on average, with temperatures ranging from a minimum of 22°C (73°F) to a maximum of 30°C (85°F). Precipitation levels also differ, as October receives significantly more rainfall at 387 mm (15.2 in) compared to May's 297 mm (11.7 in), despite both months seeing rain on 28 days. Additionally, October's humidity is higher at 79%, while May enjoys a more comfortable 63%. For more detailed information, you can check San Jose weather in May.
In a comparison of October and June weather, both months experience warm temperatures, with average highs around 25°C (77°F) and minimal temperature differences. However, October sees slightly cooler minimum temperatures of 22°C (72°F) compared to June's 23°C (73°F). Precipitation is notably higher in October, with 387 mm (15.2 in) falling over 28 days, while June has 337 mm (13.3 in) across 30 days. Additionally, October has higher humidity levels at 79%, compared to June's 74%. For more detailed information, check out San Jose weather in June.
When comparing the weather in October and July, both months feature similar temperature ranges, with minimums around 22°C (72°F), averages at 25°C (77°F), and maximums peaking at 28°C (83°F in October and 84°F in July). However, October experiences significantly higher precipitation, totaling 387 mm (15.2 in) over 28 days compared to July's 270 mm (10.6 in) spread across 30 days. Additionally, the humidity is slightly lower in October at 79%, while July has a higher humidity level of 85%. For more detailed insights, you can check San Jose weather in July.
When comparing the weather in October and August, both months feature similar temperature ranges, with minimum temperatures around 22°C (72°F) and average temperatures peaking at 25°C (77°F). However, October tends to be slightly cooler, with a maximum temperature of 28°C (83°F) compared to August's peak of 29°C (85°F). Notably, October experiences significantly higher precipitation, measuring 387 mm (15.2 in) over 28 days, while August sees 286 mm (11.2 in) spread across 30 days. The humidity is also slightly lower in October at 79%, while August holds a higher humidity level at 82%. For a detailed look at August weather, you can refer to San Jose weather in August.
In comparing the weather between September and October, we see some notable similarities and differences. Both months have a minimum temperature of around 22°C (72°F), but October's maximum temperature averages slightly lower at 28°C (83°F) compared to September's 29°C (84°F). Rainfall is significantly higher in October, with 387 mm (15.2 in) of precipitation over 28 days, compared to September's 272 mm (10.7 in) across 29 days. Humidity remains similar in both months, with October at 79% and September at 80%. For a detailed look at September weather specifics, you can check this link: San Jose weather in September.
In comparing the weather between October and November, both months experience relatively warm temperatures, with minimums starting at 22°C (72°F) and maximums peaking around 28°C (82-83°F). However, November tends to be slightly cooler on average, with an overall temperature of 24°C (76°F) compared to October's 25°C (77°F). Precipitation levels also show a notable decline; while October receives a significant 387 mm (15.2 in) of rain over 28 days, November sees a reduced total of 306 mm (12.0 in) across the same number of days, suggesting a slightly drier month. Humidity levels remain consistent at 79% for both months. For more detailed information, you can check out San Jose weather in November.
In October, the weather is typically warmer with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 28°C (83°F), averaging around 25°C (77°F). However, it is also quite rainy, receiving a significant 387 mm (15.2 in) of precipitation over 28 days and maintaining a humidity level of 79%. In contrast, December offers slightly cooler temperatures, with a minimum of 20°C (69°F) and an average of 24°C (75°F), while still reaching up to 28°C (82°F). December sees less rainfall, totaling 212 mm (8.3 in) across 27 days and a lower humidity of 70%. For more details on December's weather, you can visit San Jose weather in December.
As October unfolds in San Jose, the city experiences a notable shift in weather patterns compared to the rest of the year. The blend of warm temperatures and high humidity creates a tropical and lush atmosphere, with frequent rain showers painting the landscape in vibrant green. This month stands out not only for its increased precipitation—resulting in nearly every day feeling damp—but also for the avg. temperatures hovering comfortably around 25°C (77°F). While other months may offer clear skies and sunshine, October presents a unique charm with its cozy, rain-soaked days, making it an essential time for nature lovers and those embracing the beauty of the rainy season. For more details on the overall climate, visit San Jose Climate.