Last updated: August 21, 2025
September in Samara, Costa Rica is characterized by its warm and humid tropical climate, with maximum temperatures reaching up to 32°C (91°F) and a pleasant average temperature of 25°C (78°F). As the month unfolds, expect frequent rainfall, totaling 440 mm (17.3 in) over 29 days, contributing to the lush, green landscapes the region is known for. With humidity levels hovering around 73%, it’s an ideal time for nature enthusiasts to explore the vibrant local ecosystem, albeit while keeping an umbrella handy!
In September, Samara, Costa Rica experiences a mild tropical climate, with temperatures that reflect the transition into the rainy season. The minimum temperature hovers around 22°C (71°F) while the average sits comfortably at 25°C (78°F), providing a pleasant environment for both outdoor adventures and relaxation. With a maximum temperature reaching up to 32°C (91°F), it remains warm enough to enjoy the beautiful beaches, though the likelihood of rain increases, creating a refreshing atmosphere. This month typically sees cooler averages compared to earlier months, such as August, signaling a gradual shift toward more humid conditions, yet the warmth persists, ensuring September is still a delightful time to explore the scenic beauty of Samara.
In September, Samara, Costa Rica, experiences a remarkable continuation of its rainy season, with precipitation reaching 440 mm (17.3 in) over 29 rainy days. This substantial rainfall marks a peak in the wet season, following the heavy showers of August and leading into the even wetter month of October. The trend is evident, as May through October consistently showcase some of the highest precipitation totals of the year, with September ranking prominently among them. Each month during this period not only brings significant moisture but also underscores the lush, vibrant landscape characteristic of this tropical paradise. As the rain nourishes the region, it sets the stage for the flourishing biodiversity that defines Samara.
September in Samara, Costa Rica, offers a refreshing dip in humidity, registering at 73%. As the dry season begins to approach, this month echoes the previous trend set from late spring into summer, where humidity peaked at 79% in June and July. However, September marks a slight decrease, resembling more closely the stable humidity levels seen earlier in the year, which hovered around 71% from January to May. This consistent and moderately humid environment creates a comfortable atmosphere, perfect for enjoying the lush surroundings while the vibrant rains begin to taper off and pave the way for a drier season.
In September, Samara, Costa Rica continues to experience extreme UV levels, registering a UV Index of 13. This trend reflects the region's typically high UV exposure, with values consistently hovering around 13-14 during the dry months of January through August. Although the index dips slightly from the peak witnessed in March to July, the risk of harm from unprotected sun exposure remains significant, allowing for only a 10-minute burn time before skin damage can occur. As the year transitions into October, the UV Index stabilizes at 13, highlighting the necessity for sun safety precautions during these months. For more details on UV levels and safety tips, check Samara UV Index.
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September in Samara, Costa Rica, offers a delightful 273 hours of sunshine, continuing the trend of abundant daylight seen throughout the year. While this month shows a slight dip compared to the sun-soaked heights of March's 334 hours, it still holds its own against the rainy season. As the vibrant days of summer transition into autumn, September's sunshine is complemented by the lush, green landscape, making it a perfect time for both relaxation and adventure. Comparatively, the month maintains more sunlight than the upcoming October, which sees a further reduction to 251 hours, emphasizing September as a beautiful bridge between the vibrant summer and the quieter, cooler months ahead. With an average of more than nine hours of sunlight per day, September beckons sun-seekers and nature lovers alike to bask in its warmth.
When considering the likelihood of sunny weather in September in Samara, Costa Rica, the statistics paint a rather cloudy picture. With only a 10% chance of sunshine, September ranks as one of the least favorable months for basking in the sun. This trend of diminishing sun exposure begins in April and continues through the rainy months of May, June, July, and August, which show even lower probabilities. As the year progresses towards October and November, there is a slight uptick, yet September remains a notably wet month. For travelers seeking sun-soaked days, it may be wise to plan around this gloomy statistical outlier.
In Samara, Costa Rica, September marks the continuation of consistently pleasant daylight, boasting 12 hours of sunlight that are characteristic of the region during the peak of its rainy season. This trend of extended daylight beginning in March and persisting through September allows visitors and locals alike to enjoy the lush landscapes at their brightest. As the year transitions into October, daylight gradually diminishes to 11 hours, signaling the onset of shorter days as the dry season approaches. Overall, September maintains that sweet spot of ample light, making it an ideal time for outdoor activities amidst the natural beauty of Costa Rica.
As September rolls into Samara, Costa Rica, the winds take a gentle breath, with average speeds drifting down to 1.2 m/s (3 mph). This marks the tail end of a serene summer, where air currents have gradually softened since their peak in March at 2.6 m/s (6 mph). The transition into the rainy season brings a calmness that can be felt throughout the coastal town, as even the winds seem to retreat in favor of the lush, vibrant surroundings. Following September, a slight uptick in wind levels is anticipated in October, hinting at an uplifted ambiance as the region prepares for the replenishing rains. The overall trend showcases a notable decrease in wind intensity during the heart of the rainy season, creating a tranquil setting ideal for relaxing on the beach or exploring the serene landscapes.
Weather in Samara varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Samara, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we see distinct differences in temperature and precipitation patterns. September experiences warmer temperatures, with a minimum of 22°C (71°F) and a maximum of 32°C (91°F), while January features slightly cooler conditions, with a minimum of 17°C (63°F) and a maximum of 34°C (93°F). Precipitation is significantly higher in September, accumulating 440 mm (17.3 in) over 29 days, compared to just 18 mm (0.7 in) on only 3 days in January. Despite this, humidity levels remain relatively similar, hovering around 73% in September and 72% in January. For more detailed information about January's climate, you can visit Samara weather in January.
When comparing September and February weather, notable differences emerge. September typically experiences warmer nights with a minimum temperature of around 22°C (71°F), while February's minimum dips slightly to 19°C (66°F). However, February boasts higher average and maximum temperatures, reaching up to 27°C (81°F) and 35°C (95°F), respectively. In stark contrast, September is marked by significantly higher precipitation levels, with 440 mm (17.3 in) falling over 29 days, creating a much wetter atmosphere. February, on the other hand, is predominantly dry, receiving only 5 mm (0.2 in) of rain across just 1 day. Humidity remains fairly consistent between the two months, with September slightly higher at 73% compared to February's 71%. For more detailed insights on February weather, you can check Samara weather in February.
In comparing the weather of September and March, it's evident that both months offer warm temperatures, but they differ significantly in precipitation. September experiences higher humidity and significant rainfall, with an average temperature of 25°C (78°F), minimums of 22°C (71°F), and maximums reaching up to 32°C (91°F), while also seeing 440 mm (17.3 in) of rain spread over 29 days. In contrast, March is typically drier and warmer, featuring lower precipitation levels of just 12 mm (0.5 in) over 2 days, with average temperatures of 27°C (82°F), minimums of 20°C (68°F), and maximums soaring to 35°C (95°F). For a closer look at what you can expect during March, check out Samara weather in March.
When comparing the weather in September and April, we see notable differences in temperature and precipitation. September features slightly lower temperatures, with an average of 25°C (78°F) and maximums reaching 32°C (91°F), while April boasts a higher average of 27°C (81°F) and can peak at 35°C (96°F). However, September experiences significantly more rainfall, with 440 mm (17.3 in) spread over 29 days, compared to April's 130 mm (5.1 in) over 22 days. Additionally, both months have similar humidity levels, around 71-73%. For a more detailed look at April's weather, you can visit Samara weather in April.
In comparing the weather between September and May, we see some notable similarities and differences. September experiences a slightly cooler average temperature of 25°C (78°F), with a maximum of 32°C (91°F), while May is marginally warmer, averaging 26°C (79°F) and peaking at 34°C (93°F). Both months are characterized by high precipitation, with September receiving 440 mm (17.3 in) of rainfall over 29 days and May seeing a similar amount of 442 mm (17.4 in) across 30 days. Humidity levels are also comparable; September has a humidity of 73%, while May is slightly lower at 71%. For more detailed information, you can check Samara weather in May.
In September, the weather features a minimum temperature of 22°C (71°F), an average of 25°C (78°F), and a maximum of 32°C (91°F). Precipitation is quite significant, with 440 mm (17.3 in) falling over 29 days and humidity sitting at 73%. In contrast, June has similar temperature patterns, with a minimum of 22°C (71°F), an average of 26°C (78°F), and a maximum also reaching 32°C (91°F). However, it experiences higher precipitation levels at 498 mm (19.6 in) over the same 29 days, combined with a slightly higher humidity of 79%. Overall, while both months present warm temperatures, June tends to be wetter and more humid than September. For more specific details on June weather in the region, visit Samara weather in June.
In comparing the weather of September and July, one can notice a few key differences. During September, the average temperature is slightly lower at 25°C (78°F), while July averages at 26°C (78°F). Both months experience high maximum temperatures of around 32°C (90°F to 91°F). However, September sees significantly more precipitation, with 440 mm (17.3 in) spread across 29 days, compared to July's 331 mm (13.0 in) over 28 days. Additionally, September has a humidity level of 73%, which is a bit lower than July's 79%. For a detailed look, you can check out Samara weather in July.
In comparing the weather of September and August, we see similar temperature profiles, with September's minimum temperature at 22°C (71°F) and August's at 22°C (72°F). Both months have an average temperature of 25°C (78°F), but August tends to be slightly warmer, featuring a maximum of 33°C (92°F) compared to September's 32°C (91°F). Precipitation levels are quite comparable as well, with September receiving a total of 440 mm (17.3 in) over 29 days, while August has 417 mm (16.4 in) over the same number of days. Humidity is slightly lower in September at 73%, compared to August's 75%. For a more detailed look at August weather in Samara, you can check Samara weather in August.
In comparing the weather between September and October, both months maintain similar temperature ranges, with minimums around 22°C (71°F), average temperatures of about 25°C (78°F), and maximums reaching up to 32°C (91°F in September and 90°F in October). However, October experiences a slight increase in precipitation, totaling 514 mm (20.2 in) over 30 days, compared to September's 440 mm (17.3 in) across 29 days. Despite the increase in rainfall, humidity remains steady at 73% for both months. For a more detailed look at October's weather in the region, visit Samara weather in October.
September and November exhibit warm temperatures, with both months averaging around 25°C (78°F). However, September tends to be slightly hotter, reaching a maximum of 32°C (91°F) compared to November's high of 31°C (89°F). Precipitation is notably higher in September, with 440 mm (17.3 inches) over 29 days, whereas November sees significantly less rain at 214 mm (8.4 inches) over 25 days, making it a drier option. Humidity remains consistently high in both months, with September at 73% and November slightly higher at 74%. For a detailed look at weather conditions during November, check out Samara weather in November.
The weather in September is notably warmer and wetter compared to December. September sees minimum temperatures around 22°C (71°F) with an average of 25°C (78°F) and maximums reaching up to 32°C (91°F). However, it is characterized by heavy rainfall, accumulating 440 mm (17.3 in) over 29 days, which contributes to a humidity level of 73%. In contrast, December experiences slightly lower minimum temperatures of 20°C (68°F) and a similar average of 26°C (78°F). The maximum temperature remains comparable at 32°C (90°F), but the precipitation drops significantly to just 49 mm (1.9 in) over 10 days, resulting in a consistent humidity of 72%. For more detailed information, you can check out Samara weather in December.
As September rolls into Samara, the weather takes on a unique character that sets it apart from other months. With an average temperature that hovers comfortably around 25°C (78°F), it's a month where warmth meets the tropical embrace of high humidity—reaching about 73%. However, the charm of September comes with abundant precipitation, as the resort town experiences nearly 29 days of rainfall, bringing a lush vibrancy to the landscape. While other months may offer clearer skies and less moisture, September’s enchanting showers contribute to the area's rich, green allure. For those curious about the overall climate patterns in this stunning locale, check out Samara Climate for a comprehensive overview.