Last updated: August 27, 2025
December in Phra Nakhon Si Ayutthaya, Thailand, offers a delightful mix of warm weather and moderate humidity, making it an appealing time to explore this historic city. With daytime temperatures peaking at 36°C (97°F) and a comfortable average of 27°C (81°F), visitors can enjoy the vibrant culture under the sun. Nights cool down to a pleasant 15°C (60°F), perfect for evening strolls. While December sees only 18 mm (0.7 in) of rainfall across three days, the humidity sits at a manageable 59%, ensuring an enjoyable experience for tourists and locals alike. Embrace the charm of Ayutthaya in this inviting climate!
In Phra Nakhon Si Ayutthaya, Thailand, December marks a delightful transition into cooler weather as the year wraps up. With minimum temperatures dipping to 15°C (60°F) during the nights, it offers a refreshing respite compared to the sweltering months that precede it. The average temperature settles comfortably at 27°C (81°F), making daytime explorations quite pleasant. Despite this dip in nightly chill, the daytime highs still reach a toasty 36°C (97°F), aligning closely with the warm trends seen in previous months. This blend of cooler nights and warm days creates an inviting climate, ideal for exploring the rich cultural heritage and historical sites of the ancient city.
In Phra Nakhon Si Ayutthaya, Thailand, December marks a transition towards drier conditions, with a modest precipitation of 18 mm (0.7 in) over just 3 days. This is a stark contrast to the monsoon months preceding it, where heavy rains dominate, peaking in September at 279 mm (11.0 in) across 25 days. As the year winds down, the significant decline in rainfall from the heavy downpours of the summer months reflects a shift into a drier season, providing a welcome respite for both locals and visitors. December's relatively low precipitation signals the arrival of cooler, more pleasant weather, perfect for exploring the rich historical sites that Ayutthaya is famous for.
In Phra Nakhon Si Ayutthaya, Thailand, December marks a transitional phase in humidity levels, with an average of 59%. This month experiences a notable decrease from the previous high of 68% in November, signaling a shift away from the peak rainy season. As the year progresses, one can observe a clear upward trend in humidity beginning in March, which reaches its zenith in the humid months of August and September at 85% and 88% respectively. This pattern, characterized by a humid monsoon influence, gradually recedes as the year winds down, with December’s relative drop offering a slight relief, yet still retaining notable moisture in the air. Overall, the climatic narrative of Ayutthaya’s December reflects the region's intricate dance with humidity throughout the year.
In Phra Nakhon Si Ayutthaya, the UV Index reflects a striking trend of extreme sun exposure from February through August, where values climb as high as 14, demanding caution for outdoor activities with burn times as brief as 10 minutes. Even as the year transitions into December, the UV Index decreases only slightly to 9, placing it back into the very high category with a burn time of 15 minutes. This illustrates how the area experiences consistently intense sun, especially during the heart of the dry season. It's crucial to stay informed about these levels and take protective measures whenever stepping outside. For more details, visit Phra Nakhon Si Ayutthaya UV Index.
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In December, Phra Nakhon Si Ayutthaya shines with an impressive 315 hours of sunshine, making it a delightful time to visit. As the year draws to a close, the sunshine hours spotlight a trend of gradually increasing daylight, with December enjoying a notable rise compared to the summer months. After experiencing a peak in March with 333 hours, the sunshine gently recedes through the warmer months before stabilizing close to winter's threshold. This trend highlights a cozy transition, as visitors can relish the tail end of the dry season amidst beautiful blue skies, creating an enchanting backdrop for exploring cultural landmarks and vibrant street life.
In December, Phra Nakhon Si Ayutthaya experiences a notable increase in sunny weather, with a 66% chance of sunshine. As the year winds down, the likelihood of clear skies emerges as a brightening contrast to the preceding months, particularly the dismal rainy season from May to October, where probabilities plummeted to a mere 10% or less. This trend highlights a transition from the wet, overcast months of mid-year to a more pleasant late-autumn climate, setting the stage for enjoyable outdoor activities and sightseeing in the historic city. The sunshine in December aligns it closely with January and February, which are among the sunniest months of the year, making it an attractive time to explore the rich cultural heritage of Ayutthaya.
In Phra Nakhon Si Ayutthaya, Thailand, the daylight duration undergoes subtle yet noticeable changes throughout the year. December brings a return to 11 hours of daylight, mirroring the shorter days of both January and February. The daylight duration gradually increases from March through September, reaching a peak of 12 hours, suggesting a consistent pattern of longer days during the warmer months. As the year closes, the daylight begins to wane again, leading into the cooler season. This rhythm of daylight not only marks the seasonal transitions but also reflects the unique climate of this picturesque region, making it an intriguing aspect for residents and visitors alike.
As December blankets Phra Nakhon Si Ayutthaya, the wind begins to pick up, bringing an invigorating freshness to the historical landscape. With an average wind speed of 2.7 m/s (6 mph), December stands out as one of the breezier months, a delightful contrast to the calmer April and October. The steady increase in wind speeds from the cooler months of November and October signifies a shift in the atmosphere, invigorating both the city’s locals and visitors with a refreshing breeze. This lively wind not only enhances the charm of the ancient ruins but also invites exploration, making it an ideal time to wander through the fascinating streets and soak in the rich history under a vibrant sky.
Weather in Phra Nakhon Si Ayutthaya varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Phra Nakhon Si Ayutthaya, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Phra Nakhon Si Ayutthaya range from a minimum of 15°C (60°F) to a maximum of 36°C (97°F), with an average of 27°C (81°F). The month sees some precipitation, totaling 18 mm (0.7 in) over three days, and humidity levels are around 59%. In comparison, January experiences slightly warmer minimum temperatures, starting at 16°C (61°F), while the maximum remains similar at 36°C (96°F). The average temperature is consistent at 27°C (81°F), but there is a slight decrease in rainfall, totaling 17 mm (0.7 in) over the same three days, and humidity drops to 50%. For more detailed information on January weather, you can visit Phra Nakhon Si Ayutthaya weather in January.
In December, the weather features a minimum temperature of 15°C (60°F) and can reach a maximum of 36°C (97°F), with an average of 27°C (81°F) and humidity levels around 59%. The month sees about 18 mm (0.7 in) of precipitation over three days. In contrast, February experiences slightly warmer temperatures, with a minimum of 18°C (65°F) and a maximum of 37°C (98°F), averaging at 28°C (83°F). Precipitation decreases to 12 mm (0.5 in) over three days, and humidity drops to a more comfortable 47%. For more details on the weather in February, you can check Phra Nakhon Si Ayutthaya weather in February.
In December, the weather is generally milder, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 36°C (97°F) and an average of around 27°C (81°F). The month sees relatively low precipitation, with only 18 mm (0.7 in) over about 3 days, and humidity levels at 59%, contributing to a comfortable atmosphere. In contrast, March brings warmer conditions, featuring a minimum of 23°C (73°F) and soaring to a high of 39°C (102°F), averaging 30°C (86°F). Precipitation increases significantly to 47 mm (1.8 in) across 5 days, and humidity drops to 41%, resulting in a hotter and potentially more oppressive environment. For more detailed information, you can check Phra Nakhon Si Ayutthaya weather in March.
When comparing the weather in December and April, notable differences emerge. December boasts warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching up to 36°C (97°F), and generally lower precipitation at just 18 mm (0.7 in) over 3 days. The humidity in December hovers around 59%, providing a comfortable atmosphere. In contrast, April experiences higher temperatures overall, with minimums at 20°C (68°F) and maximums soaring to 40°C (104°F). The month is also significantly wetter, receiving 100 mm (4.0 in) of rain across 15 days, albeit with lower humidity at 51%. For more details, you can check Phra Nakhon Si Ayutthaya weather in April.
In comparing the weather between December and May, it’s clear that May is significantly warmer and wetter. December boasts a mild temperature range with minimums around 15°C (60°F) and maximums peaking at 36°C (97°F), accompanied by low precipitation of just 18 mm (0.7 in) over three days. In contrast, May experiences higher temperatures with minimums of 23°C (74°F) and maximums that can reach up to 40°C (104°F). Additionally, May is much wetter, with a total precipitation of 166 mm (6.5 in) spread over 21 days, resulting in increased humidity levels of 76%. For a more detailed look at the weather in May, you can check the following link: Phra Nakhon Si Ayutthaya weather in May.
When comparing the weather in December and June, notable differences emerge. December features warmer days, with average temperatures ranging from a mild 15°C (60°F) at night to a high of 36°C (97°F) during the day. It’s relatively dry, with only 18 mm (0.7 in) of precipitation occurring over just three days and humidity averaging around 59%. In contrast, June presents a much warmer and wetter climate, as temperatures range from a minimum of 25°C (77°F) to a scorching maximum of 39°C (102°F). The month sees significantly higher rainfall, accumulating 135 mm (5.3 in) over 22 days, resulting in increased humidity levels averaging 83%. For more specific conditions in June, you can view the details here: Phra Nakhon Si Ayutthaya weather in June.
December and July present contrasting weather patterns in Phra Nakhon Si Ayutthaya. In December, temperatures range from a mild 15°C (60°F) at night to a warm 36°C (97°F) during the day, accompanied by relatively low precipitation of 18 mm (0.7 in) over just 3 days. The humidity averages around 59%, making it a more comfortable month for outdoor activities. In contrast, July experiences much higher nighttime temperatures, with a minimum of 25°C (77°F) and daytime highs reaching up to 38°C (101°F). This month is characterized by substantial rainfall, totaling 179 mm (7.1 in) over 26 days, coupled with high humidity levels of 80%, which can make the weather feel quite oppressive. For more information on July weather, you can check Phra Nakhon Si Ayutthaya weather in July.
The weather in December offers a more temperate climate compared to the sweltering heat of August. With minimum temperatures around 15°C (60°F) and maximums reaching 36°C (97°F), December averages a comfortable 27°C (81°F) with relatively low humidity at 59%. In stark contrast, August experiences higher minimum temperatures of 24°C (76°F) and maximums soaring to 38°C (101°F), averaging 29°C (85°F) alongside substantial rainfall of 194 mm (7.6 in) over 25 days. This makes August not only hotter but also significantly wetter, contributing to a muggy atmosphere with humidity levels reaching 85%. For more details on August's weather specifics, you can visit Phra Nakhon Si Ayutthaya weather in August.
December and September in Phra Nakhon Si Ayutthaya display contrasting weather patterns. In December, temperatures are generally milder, with a minimum of 15°C (60°F) and an average of 27°C (81°F), while September boasts a warmer average of 29°C (84°F) and a maximum of 37°C (98°F). Notably, December experiences significantly less precipitation, with only 18 mm (0.7 in) over three days, compared to September’s heavy rainfall of 279 mm (11.0 in) spread across 25 days. Additionally, December's humidity at 59% is much lower than September’s humid average of 88%. For a detailed look at September's climate, check out Phra Nakhon Si Ayutthaya weather in September.
In comparing the weather of December and October, it's clear that December offers a more comfortable climate. With minimum temperatures around 15°C (60°F) and a daily average of 27°C (81°F), December is cooler than October, which experiences a minimum of 22°C (71°F) and an average of 29°C (84°F). While October has higher maximum temperatures, peaking at 37°C (99°F), it also sees significantly more precipitation, with 212 mm (8.4 in) over 19 days, compared to December's 18 mm (0.7 in) across just 3 days. Additionally, humidity in October is notably higher at 79%, compared to December's 59%, contributing to a more oppressive feel during October. For a closer look at specific weather details, you can check Phra Nakhon Si Ayutthaya weather in October.
December weather in Phra Nakhon Si Ayutthaya offers slightly cooler temperatures compared to November, with minimums dropping from 21°C (70°F) to 15°C (60°F) and an average temperature of 27°C (81°F). While daytime highs remain consistent at a maximum of 36°C (97°F), December experiences significantly less rainfall, with only 18 mm (0.7 in) over just 3 days, compared to November's 50 mm (2.0 in) across 8 days. Additionally, December's humidity is lower at 59%, making it feel a bit more comfortable than the 68% experienced in November. For more detailed insights, you can check Phra Nakhon Si Ayutthaya weather in November.
As December rolls in, Phra Nakhon Si Ayutthaya experiences a refreshing shift in its weather, setting it apart from the hotter months of the year. With maximum temperatures around a comfortable 36°C and a pleasant average of 27°C, the climate becomes more bearable, allowing for enjoyable exploration of this historic city. Rainfall is minimal, typically confined to just a few days, which keeps the landscape inviting and vibrant. Additionally, relative humidity settles at a moderate 59%, making outdoor activities much more pleasant. For those planning a visit, December offers an ideal balance of warmth and dryness compared to the more oppressive conditions of previous months. To learn more about the overall weather patterns, check out the Phra Nakhon Si Ayutthaya Climate.