Last updated: August 21, 2025
December in Santa Ana, Costa Rica, offers a delightful blend of warm temperatures and refreshing rainfall, making it a unique time to visit. Daytime highs reach a pleasant 26°C (80°F), while the average temperature hovers around 20°C (68°F), ensuring comfortable conditions for exploration. As the month unfolds, you might experience about 11 days of precipitation, totaling 63 mm (2.5 in), which contributes to the region's lush greenery. With an average humidity of 72%, the air carries a tropical essence, inviting you to immerse yourself in the vibrant landscapes and rich culture of this charming locale.
In December, Santa Ana, Costa Rica, experiences a lovely transition into the cooler end of the year, with temperatures reflecting a pleasant tropical climate. The month sees minimums around 15°C (58°F), perfectly balancing cozy evenings. As the sun rises, average daytime highs hover at 20°C (68°F), providing a comfortable atmosphere for outdoor activities. With maximum temperatures peaking at 26°C (80°F), it's clear that December is a time for mild warmth and vibrant festivities. This trend of moderate temperatures makes it an ideal month for visitors to explore the lush landscapes and enjoy the charming local culture, setting the stage for an enchanting holiday experience.
In December, Santa Ana, Costa Rica experiences a noticeable shift in precipitation as the month signals the tail end of the rainy season. With an average of 63 mm (2.5 in) of rainfall spread over 11 days, moisture levels decrease significantly compared to the heavy downpours seen in months like October and September. This transition marks a departure from the peak rainy months, where totals soared above 400 mm, with October peaking at a striking 570 mm (22.4 in). As the year draws to a close, the lighter rains of December offer a gentler climate, paving the way for drier conditions in the following months, thus making it a time for locals and visitors alike to enjoy the lush surroundings after the abundant rainfall.
In December, Santa Ana, Costa Rica, experiences a shift in humidity, measuring at 72%. This marks a transition from the peak humidity levels observed in the preceding months of June and July, where humidity soared to 84% and 85%, respectively. As the year draws to a close, December's figures reflect a gradual decrease, aligning closely with the more moderate levels seen in the earlier months — 68% in both January and February. This slight rebound in humidity indicates that while the rainy season's grip is loosening, the lush green surroundings continue to thrive in this tropical climate. Overall, December provides a refreshing blend of warmth and moisture, making it a delightful time to explore the natural beauty of Santa Ana.
In December, Santa Ana, Costa Rica experiences a UV Index of 10, categorized as very high, allowing for a slightly longer burn time of 15 minutes compared to the preceding months. This reduction from the extreme levels seen earlier in the year—where indices peaked at an alarming 15 in both March and April—indicates a minor reprieve as the year comes to a close. However, caution is still essential, as December retains a significant UV risk. As you explore the sun-drenched landscapes of Santa Ana, remember to protect your skin and check the latest updates for safe sun exposure. For more detailed information, visit Santa Ana UV Index.
UV Risk Categories
In December, Santa Ana basks in a delightful 291 hours of sunshine, showcasing a remarkable transition from the cloudier months. As the holiday season approaches, the weather turns increasingly favorable, with daylight hours reflecting a warm embrace that contrasts with the dimmer days of June and July, which see the least sunshine at around 209 to 226 hours. The trend is clear: as the year winds down, sunshine peaks in March at 329 hours, with December maintaining a solid position just behind spring's golden days. This influx of sunshine not only heralds the festive spirit but also invites both residents and tourists to enjoy the vibrant outdoor activities that Costa Rica is known for.
In Santa Ana, Costa Rica, December offers a pleasant 50% chance of sunny weather, making it one of the more favorable months for sunshine as the year comes to a close. This is a significant improvement from the previous months, which experience increasingly lower probabilities of sun, particularly during the rainy season from April to November. Notably, December transitions away from the wetter months of October and November, showing a resurgence in sunny days. As the year wraps up, visitors can expect a delightful balance of sunshine and clouds, ideal for exploring the vibrant landscapes and rich culture of this beautiful region.
In Santa Ana, Costa Rica, the daylight duration demonstrates a captivating rhythm throughout the year. Starting with an average of 11 hours in January and February, the days gradually lengthen as spring approaches, peaking at 12 hours from March through September. This consistent twelve-hour stretch creates a sense of balance, perfectly complemented by the lush greenery of the rainy season. As the year closes, daylight begins its gentle retreat, returning to 11 hours in December, echoing the patterns established at the year's outset. This cyclical nature of daylight not only highlights the region's tropical charm but also sets a soothing backdrop for both residents and visitors to enjoy year-round.
As December arrives in Santa Ana, Costa Rica, the refreshing winds begin to pick up pace, with an average wind speed of 2.1 m/s (5 mph). This slight increase from November's 1.7 m/s signals a transition toward the dry season, characterized by more consistent breezes. Throughout the year, wind speeds have generally declined from the early months, where they peaked at 2.4 m/s in January, with a gradual drop particularly noticeable during the humid late spring and summer months. However, December's return to a more spirited flow provides a vibrant contrast to the stillness of earlier months, inviting both locals and visitors to enjoy the breezy atmosphere that enhances the region's lush landscapes and comfortably warm temperatures.
Weather in Santa Ana varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Ana, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is generally warm with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 26°C (80°F) and an average of 20°C (68°F). December sees more rainfall, averaging 63 mm (2.5 in) over 11 days, and a humidity level of 72%. In contrast, January experiences slightly cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 27°C (82°F), while still maintaining the same average of 20°C (68°F). Precipitation is significantly reduced in January to 32 mm (1.3 in) over just 6 days, and humidity drops to 68%. For more details on January weather, you can visit Santa Ana weather in January.
When comparing the weather in December and February, there are some notable differences. December experiences slightly warmer average temperatures, ranging from a minimum of 15°C (58°F) to a maximum of 26°C (80°F), while February has a minimum of 13°C (56°F) and a higher maximum of 28°C (83°F). December also tends to be wetter, with 63 mm (2.5 in) of precipitation spread over 11 days, compared to February's 13 mm (0.5 in) over just 3 days. Humidity levels are slightly higher in December at 72%, with February seeing a reduction to 68%. For more detailed insights, visit Santa Ana weather in February.
In December, the weather is generally milder with average temperatures ranging from a minimum of 15°C (58°F) to a maximum of 26°C (80°F). The month sees approximately 63 mm (2.5 inches) of precipitation over about 11 days, contributing to a humid atmosphere with levels around 72%. In contrast, March presents slightly warmer conditions, with an average temperature of 21°C (70°F) and maxima reaching 28°C (83°F). Notably, March is much drier, experiencing only 15 mm (0.6 inches) of rainfall over just 4 days, resulting in a lower humidity of 66%. For more detailed insights, you can check Santa Ana weather in March.
In December, temperatures are generally milder, with minimums around 15°C (58°F) and average highs reaching 26°C (80°F). The month experiences an average precipitation of 63 mm (2.5 in) over about 11 days, accompanied by a humidity level of 72%. Conversely, April brings slightly warmer conditions, with an average temperature of 21°C (70°F) and maximums hitting up to 29°C (85°F). However, it's also a wetter month, receiving 79 mm (3.1 in) of rainfall, spread over approximately 16 days, while humidity decreases slightly to 67%. For a detailed overview of April weather, you can check Santa Ana weather in April.
December and May present distinct weather conditions. In December, temperatures range from a minimum of 15°C (58°F) to a maximum of 26°C (80°F), with an average of 20°C (68°F). The month experiences moderate precipitation of 63 mm (2.5 in) spread over 11 days, along with a humidity level of 72%. In contrast, May sees slightly warmer temperatures, with a minimum of 16°C (61°F), an average of 21°C (70°F), and a maximum of 28°C (83°F). However, it is significantly wetter, experiencing 391 mm (15.4 in) of rainfall over 27 days, along with a humidity level of 69%. For more detailed information, you can check out Santa Ana weather in May.
December and June exhibit noteworthy differences in weather patterns. In December, temperatures range from a mild 15°C (58°F) to a maximum of 26°C (80°F), with an average of 20°C (68°F). The month experiences about 63 mm (2.5 in) of precipitation over 11 days, along with a relative humidity of 72%. In contrast, June is slightly warmer, with temperatures ranging from 16°C (60°F) to 27°C (81°F) and an average of 21°C (70°F). However, June is significantly wetter, receiving approximately 351 mm (13.8 in) of rain over 27 days, accompanied by a higher humidity level of 84%. For more detailed weather insights, you can visit Santa Ana weather in June.
In December, the weather in Santa Ana features mild temperatures with a minimum of 15°C (58°F), an average of 20°C (68°F), and a maximum of 26°C (80°F). The month experiences lower humidity at 72% and receives 63 mm (2.5 in) of precipitation over about 11 days. In contrast, July typically sees slightly warmer temperatures, with a minimum of 16°C (61°F), an average of 21°C (69°F), and a maximum of 27°C (81°F). However, July is considerably wetter, with 233 mm (9.2 in) of rainfall spread across 26 days and higher humidity at 85%. This stark difference in precipitation and humidity, combined with generally comfortable temperatures, sets December apart from the much wetter July. For more detailed information on July weather, visit Santa Ana weather in July.
In December, the weather is generally mild, with a minimum temperature of 15°C (58°F) and an average of 20°C (68°F), reaching a maximum of 26°C (80°F). This month experiences moderate precipitation, with 63 mm (2.5 in) over 11 days and a humidity level of 72%. In contrast, August presents a more humid and wetter climate, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 28°C (82°F) and an average of 20°C (69°F). August sees significantly higher rainfall at 331 mm (13.0 in) spread across 26 days, resulting in an elevated humidity of 82%. For a closer look at the specifics of August weather in Santa Ana, you can explore Santa Ana weather in August.
In comparing the weather of December and September, it's evident that both months share similar minimum and average temperatures, ranging from 15°C to 20°C. However, December tends to be drier, with only 63 mm of precipitation over 11 days compared to September's significantly wetter conditions, which see 436 mm of rain over 28 days. Additionally, humidity is slightly lower in December at 72%, compared to the higher 81% humidity experienced in September. For more detailed insights into September weather, you can visit Santa Ana weather in September.
When comparing the weather in December and October, both months exhibit similar average temperatures, with a minimum of 15°C (58°F) and an average of 20°C (68°F). However, October tends to be slightly warmer on the high end, reaching a maximum of 27°C (80°F), compared to December's 26°C (80°F). A significant difference lies in the precipitation levels: October experiences a substantial 570 mm (22.4 in) over about 29 days, making it considerably wetter than December, which has only 63 mm (2.5 in) of rain over 11 days. Additionally, October's humidity at 80% is higher than December's 72%, contributing to a more tropical feel. For more details about October's weather, check out this link: Santa Ana weather in October.
In comparing the weather of December and November, we see some notable differences. Both months showcase similar temperature ranges, with minimums around 15°C (58°F), averages at 20°C (68°F), and maximums reaching 26°C (80°F). However, December experiences significantly less precipitation, measuring only 63 mm (2.5 in) over 11 days, while November sees a much higher total of 209 mm (8.2 in) across 19 days. Additionally, humidity levels in November are slightly higher at 80%, compared to December’s 72%. For a detailed insight into November's weather, you can check Santa Ana weather in November.
As December rolls in, Santa Ana's weather showcases a delightful shift from the warmth of previous months, offering a pleasant blend of comfortable temperatures and occasional rain. With an average temperature hovering around 20°C, visitors can enjoy milder days contrasted by cooler nights. However, the month does bring a notable increase in humidity and precipitation, as the landscape prepares for the lush greenery ahead. Unlike the drier summer months, December's 11 rainy days create a vibrant atmosphere, making it an exciting time for nature enthusiasts and those seeking a refreshing escape. For more detailed insights on the weather patterns, explore Santa Ana Climate.