Last updated: August 21, 2025
Experience the vibrant September weather in Sarchi, Costa Rica, where the air is filled with the essence of the rainy season. With a maximum temperature hovering around 27°C (80°F) and an average of 20°C (69°F), this month presents a comfortable atmosphere, perfect for soaking in the lush surroundings. The minimum temperature dips to a cool 15°C (60°F), offering welcome relief during the evenings. Rainfall is abundant, totaling 436 mm (17.2 in) over 28 days, contributing to the verdant landscape and the region's lush biodiversity. Expect high humidity levels at 81%, which enhance the tropical experience — making it an ideal time for eco-adventures and exploring the rich culture of Sarchi.
In September, Sarchi, Costa Rica, experiences mild temperatures that reflect a blend of the rainy season's cooling effects and the region's typical warmth. With a minimum of 15°C (60°F) and a comfortable average of 20°C (69°F), the climate remains inviting for outdoor activities. The maximum temperature hovers around 27°C (80°F), demonstrating a slight dip compared to the hotter months preceding it. This month’s temperatures are consistent with the pleasant trends seen throughout the year, where mild nights and warm days create a harmonious atmosphere, making Sarchi an ideal destination for those seeking both adventure and comfort.
September marks a significant peak in precipitation for Sarchi, Costa Rica, with an impressive 436 mm (17.2 in) of rainfall, making it one of the wettest months of the year. This surge in rainfall comes as the region transitions deeper into its rainy season, with 28 days of rain in September alone, showcasing a notable increase compared to the earlier months. Interestingly, rainfall in September surpasses that of both May and August, indicating a later-season intensification. As the lush greenery flourishes under these heavy rains, the town braces for October, typically known for even higher precipitation levels, prompting a vibrant and thriving natural landscape.
In Sarchi, Costa Rica, September marks a notable point in the year with an average humidity of 81%. This figure reflects a slight decrease from the peak of 85% experienced in July, showcasing a gradual transition as the region shifts from its wettest months. Notably, humidity levels remain comfortably high throughout September, aligning closely with the trends seen in August and October, which report 82% and 80% respectively. The consistency in humidity during the lingering rainy season highlights Sarchi's lush, vibrant environment, making it a picturesque destination for those who appreciate the beauty of tropical climates.
September in Sarchi, Costa Rica, continues the trend of extreme UV exposure with a UV Index of 13, aligning closely with August's reading. This consistent level of intensity suggests a persistent risk for sunburn, maintaining a swift burn time of just 10 minutes. As the months progress from January to September, the UV Index remains notably high, peaking at 15 in March and April, illustrating Sarchi's year-round exposure to strong solar radiation. For those planning outdoor activities, it's crucial to prioritize sun safety to mitigate the risks associated with such elevated UV levels. For detailed information on UV exposure, visit Sarchi UV Index.
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September in Sarchi, Costa Rica, welcomes a delightful 230 hours of sunshine, making it a lovely month within the region's nuanced weather pattern. As the year progresses, the sunshine peaks in March with 329 hours, setting a high bar that gradually gives way to the lush rainy season. After the sunny brilliance of earlier months, September's sunlight reflects a comforting balance, nestled between the vibrant days of February and the slightly dimmer October. This transition showcases Sarchi's ability to offer a rich tapestry of weather, where even as the rainy season approaches, September still provides ample opportunities for outdoor adventures under a golden sun.
In Sarchi, Costa Rica, the likelihood of sunny weather in September is quite low, with only an 8% chance of sunshine. This pattern is reflective of the region's marked shift from the drier months at the beginning of the year to the wetter season that begins in April. As the months progress from August to September, the chances of clear skies decline dramatically, peaking in the year's earlier months. Visitors should prepare for cloudier, rainier days during September, as the region typically experiences significant rainfall, making it one of the least sunny months of the year.
In Sarchi, Costa Rica, September offers a pleasing 12 hours of daylight, continuing the trend established in the preceding months of June through August. This consistency reflects the region's unique climate and latitude, where daylight duration remains fairly stable throughout the year. As the year progresses towards October, daylight hours will slightly decrease to 11 hours, marking a gentle transition to the shorter days of the later months. The reliable length of days in September encourages both locals and visitors to embrace outdoor activities amidst the vibrant natural scenery, making it an ideal time to explore the beauty of Sarchi.
In September, Sarchi, Costa Rica experiences gentle breezes with an average wind speed of 1.2 m/s (3 mph), reflecting one of the lower points in the year. This slight lull follows a gradual decline in wind strength throughout the prior months, as the region transitions from its more turbulent summer. While the winds may seem tame compared to the breezier start of the year, September's calm is a precursor to the increase in wind speeds that re-emerges in the following months, particularly November, when the average climbs back to 1.7 m/s (4 mph). The contrast between the breezy beginnings and the soft September air offers a unique charm to this vibrant town, inviting visitors to savor the tranquil atmosphere as nature prepares for changes ahead.
Weather in Sarchi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sarchi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between September and January, both months exhibit similar average high temperatures around 20°C (68°F) to 27°C (82°F). However, September is marked by significantly higher rainfall, totaling 436 mm (17.2 in) over 28 days, while January experiences a much drier climate with only 32 mm (1.3 in) of precipitation in just 6 days. Humidity levels also differ, with September averaging at a high 81%, whereas January has a lower humidity of 68%. For more detailed information, you can check Sarchi weather in January.
In comparing the weather between September and February, September typically features a more humid atmosphere, with an average humidity level of 81% and significant rainfall totaling 436 mm over 28 days. Temperatures in September range from a minimum of 15°C (60°F) to a maximum of 27°C (80°F). In contrast, February presents a drier climate, with only 13 mm of precipitation across just 3 days and lower humidity at 68%. The temperatures during February can reach a maximum of 28°C (83°F) while ranging from a minimum of 13°C (56°F) to an average of 20°C (69°F). For a closer look at February weather specifics, you can refer to Sarchi weather in February.
September and March present contrasting weather patterns, with September experiencing a cooler average temperature of around 20°C (69°F) compared to March's warmer average of 21°C (70°F). While September boasts maximum temperatures reaching up to 27°C (80°F), March peaks slightly higher at 28°C (83°F). Notably, September is characterized by significant rainfall, with a staggering 436 mm (17.2 in) of precipitation over 28 days, leading to high humidity levels of 81%. In stark contrast, March enjoys much drier conditions, with only 15 mm (0.6 in) of rain over just 4 days and a lower humidity of 66%. For more detailed information, you can visit Sarchi weather in March.
When comparing the weather in September and April, we observe some noteworthy differences. September experiences maximum temperatures reaching 27°C (80°F) and a high average humidity of 81%, but it also sees significant rainfall, with 436 mm (17.2 in) spread over 28 days. In contrast, April tends to be warmer, with maximum temperatures peaking at 29°C (85°F) and a lower average humidity of 67%. The rainfall in April is considerably less at 79 mm (3.1 in), occurring over 16 days, making it generally drier than September. For more specific details on April weather in Sarchi, you can visit Sarchi weather in April.
In comparing September and May weather, both months experience relatively mild temperatures, with September showing a minimum of 15°C (60°F) and an average of 20°C (69°F), while May registers slightly higher with a minimum of 16°C (61°F) and an average of 21°C (70°F). September tends to be more humid, with a humidity level of 81%, compared to May's 69%. Despite the mildness, September is rainier, receiving 436 mm (17.2 in) of precipitation over 28 days, while May has a bit less precipitation at 391 mm (15.4 in) over 27 days. For more detailed insights, you can visit Sarchi weather in May.
When comparing the weather in September and June, both months exhibit a similar temperature range, with September showing a minimum of 15°C (60°F), an average of 20°C (69°F), and a maximum of 27°C (80°F), closely mirroring June’s temperatures of 16°C (60°F) minimum, 21°C (70°F) average, and a similar maximum of 27°C (81°F). However, September typically experiences more precipitation, with 436 mm (17.2 in) falling over 28 days, compared to June's 351 mm (13.8 in) across 27 days. Humidity is slightly lower in September at 81%, while June has a higher relative humidity of 84%. For more detailed insights on June weather patterns, you can check Sarchi weather in June.
When comparing the weather in September and July, we see some interesting contrasts. In September, the temperature ranges from a minimum of 15°C (60°F) to a maximum of 27°C (80°F), with an average of 20°C (69°F). This month is characterized by significant rainfall, totaling 436 mm (17.2 in) over 28 days, and humidity levels hover around 81%. In contrast, July has slightly warmer temperatures, with a minimum of 16°C (61°F) and the same maximum of 27°C (81°F), but as the average temperature is marginally higher at 21°C (69°F). July experiences less precipitation, amounting to 233 mm (9.2 in) over 26 days, and a slightly higher humidity of 85%. For a more detailed look at July weather, visit Sarchi weather in July.
In comparing the weather of September and August, we see some notable differences. September features slightly cooler minimum and maximum temperatures, with averages hovering around 20°C (69°F) and highs reaching 27°C (80°F). In contrast, August has a slightly warmer range, with minimums at 16°C (60°F) and maximums at 28°C (82°F). Precipitation is more abundant in September, totaling 436 mm (17.2 in) over 28 days, compared to August's 331 mm (13.0 in) over 26 days, highlighting September's wetter conditions. Humidity levels are similar for both months, with September at 81% and August at 82%, creating a consistently humid environment throughout the late summer and early fall. For more specific details about August's weather, you can visit Sarchi weather in August.
In September, the weather typically features a minimum temperature of 15°C (60°F) and an average of 20°C (69°F), peaking at a maximum of 27°C (80°F). However, the month is known for its heavy precipitation, accumulating 436 mm (17.2 in) over 28 days, resulting in high humidity levels of 81%.
October mirrors September in temperature, maintaining the same range of 15°C (60°F) to 27°C (80°F) with an average of 20°C (68°F). Yet, it brings an increase in rainfall, totaling 570 mm (22.4 in) across 29 days, while humidity remains slightly lower at 80%. For detailed weather insights specific to this month, you can refer to Sarchi weather in October.
In September, the weather is warm with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 27°C (80°F), averaging around 20°C (69°F). However, this month experiences high humidity at 81% and substantial rainfall, with 436 mm (17.2 in) of precipitation falling over 28 days. In contrast, November sees a slight drop in maximum temperature, reaching 26°C (79°F), while maintaining the same minimum and average temperatures as September. Notably, precipitation decreases significantly to 209 mm (8.2 in) over just 19 days, and humidity remains relatively stable at 80%. For a more detailed look at November weather, you can visit Sarchi weather in November.
In September, the weather is characterized by warmer temperatures, with a minimum of 15°C (60°F), an average of 20°C (69°F), and a maximum reaching 27°C (80°F). However, this month also sees significant rainfall, with a substantial 436 mm (17.2 in) of precipitation over 28 days, contributing to a high humidity level of 81%. In contrast, December offers slightly cooler conditions, with similar minimum and average temperatures but a max temperature of 26°C (80°F). Precipitation drops dramatically to just 63 mm (2.5 in) over 11 days, resulting in a more comfortable humidity level of 72%. For more detailed information about December weather specifics, visit Sarchi weather in December.
September in Sarchi stands out for its intensely humid and rainy character, marking a significant shift from the drier months. With precipitation gracing the area on nearly every day, the lush green surroundings thrive, creating a picturesque landscape. Temperatures remain relatively mild, making it an ideal time for cozy indoor activities or rain-soaked adventures. While the humidity level peaks, the overall atmosphere is vibrant, showcasing the beauty of a tropical climate in full swing. For a deeper understanding of how September fits into the overall climate patterns, explore our detailed page on Sarchi Climate.