Last updated: August 31, 2025
In December, Saipan, part of the Northern Mariana Islands, experiences a tropical climate characterized by warm temperatures and high humidity. With daily highs averaging around 29°C (84°F) and typical lows around 25°C (78°F), visitors can expect pleasantly mild weather. However, this month also sees an average of 19 days of rainfall, totaling approximately 74 mm (2.9 in), contributing to a humidity level of 83%. This blend of warmth and moisture creates a vibrant, lush environment, perfect for exploring the island's natural beauty and enjoying its rich cultural offerings.
In December, Saipan experiences a delightful transition as temperatures remain warm and inviting, with minimums averaging around 25°C (78°F) and maximums peaking at 29°C (84°F). This month sees an overall average temperature of 27°C (82°F), which is consistent with the mild conditions that characterize the transition from late fall to winter. Compared to the preceding months, December's temperatures showcase a slight dip in both minimums and maximums, but the warmth persists, underscoring Saipan's tropical charm year-round. Thus, visitors can expect pleasant weather, making it an ideal time to enjoy outdoor adventures and soak in the beauty of this paradise.
In December, Saipan experiences a notable shift in precipitation, with 74 mm (2.9 in) of rain spread over approximately 19 days. This marks a decrease from the high rainfall observed in previous months, particularly the peak seen in August with 409 mm (16.1 in), and a reduction from 141 mm (5.5 in) in November. The trend highlights the gradual transition into the drier season, showcasing a pattern where rainfall begins to taper off as the year draws to a close. However, compared to the earlier months, December remains relatively wet, indicating that while the heavy rains wane, the island still receives a steady amount of precipitation, keeping its lush landscape vibrant.
December in Saipan, Northern Mariana Islands, sees a humidity level of 83%, aligning closely with the patterns established throughout the year. The humidity remains relatively consistent, fluctuating between 80% and 84% across the months, creating a tropical atmosphere that characterizes the island's climate. After a slight dip in the midsummer months of July and August, humidity gracefully rebounds during the fall and winter, culminating in December's moisture that mirrors the high levels observed in both January and March. This steady humidity not only enhances the lush landscapes but also contributes to the island's warm, inviting environment year-round.
In December, Saipan experiences a UV Index of 10, categorized as very high, with an estimated burn time of just 15 minutes. This marks a slight decline compared to the preceding months, where the UV Index frequently reached extreme levels, peaking at 15 in April. While December offers some relief from the intense sunshine typically felt during the summer months—where a constant UV Index of 14 dominated—caution is still advised for outdoor activities. As you plan your beach days or outdoor adventures, remember to take necessary precautions under the sun. For more insights, check out the Saipan UV Index for detailed information.
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In December, Saipan basks in a delightful average of 288 hours of sunshine, continuing the trend of steady sunlight as the year comes to a close. This figure reflects a modest decline from the sun-drenched peak of 339 hours in May, yet it remains vibrant compared to the earlier months, such as January with only 230 hours. The gradual increase in sunshine hours throughout the year, particularly between February and May, showcases the island's enchanting transition into its warmest season. As the year wraps up, December offers a perfect blend of radiant days, inviting visitors to soak in the serene beauty of the Northern Mariana Islands.
December in Saipan, Northern Mariana Islands, offers a 45% chance of sunny weather, a modest probability that reflects a seasonal shift towards cooler and wetter months. As winter approaches, the trend shows a noticeable decline in sunny days compared to the sunnier early months; March boasts 77% sunshine, while May and June hover around the 49% and 42% marks respectively. Interestingly, November makes a comeback with a 59% likelihood of sunshine, just before the December downturn. This means that while sun-seekers may find December's weather less reliable, the warmth and beauty of Saipan still provide a charming backdrop for holiday celebrations amidst the clouds.
In Saipan, Northern Mariana Islands, the daylight duration dances subtly throughout the year, reflecting the island's tropical charm. Beginning in December, residents can expect approximately 11 hours of daylight, a continuation of the shorter days observed in the preceding months of October and November. This period marks a gentle transition from the lengthening days of spring and summer—peaking at 13 hours in June. Following this peak, daylight gradually recedes again, culminating in a consistent return to 11 hours by the year's end. The rhythmic ebb and flow of daylight in Saipan invites both locals and visitors to embrace the vibrant island life, no matter the season.
In Saipan, December brings a refreshing gust of wind, with an average speed of 7.9 m/s (18 mph), marking a notable increase from the calmer summer months. Throughout the year, wind speeds tend to fluctuate, dipping to their lowest in June at 4.3 m/s (10 mph), before gradually ascending again. The late autumn months see a resurgence in wind, with November gusting at 7.4 m/s (16 mph), setting the stage for December's invigorating breezes. This trend underscores the island's dynamic weather patterns, as the winds pick up momentum, creating a vibrant atmosphere for both locals and visitors to enjoy the tropical landscape.
Weather in Saipan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saipan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between December and January, we see that both months maintain a warm climate, with average temperatures hovering around 27°C (82°F). December experiences slightly higher maximum temperatures at 29°C (84°F) compared to January's peak of 28°C (83°F). However, January brings a welcomed reduction in precipitation, with only 52 mm (2.0 in) falling over 13 days, compared to December's 74 mm (2.9 in) over 19 days. Notably, humidity remains constant at 83% for both months, making January slightly drier overall. For more detailed insights on January's weather, check out Saipan weather in January.
December and February exhibit relatively similar weather patterns, with December experiencing slightly warmer temperatures. In December, temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (84°F), while February sees a slightly cooler range with minimums at 24°C (76°F) and maximums reaching 28°C (83°F). Precipitation is also greater in December, totaling 74 mm (2.9 in) across 19 days, compared to February’s 57 mm (2.2 in) over 17 days. Humidity levels are fairly consistent, with December at 83% and February at 81%. For a more detailed look at weather specifics, check out Saipan weather in February.
In December, the weather is quite warm, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (84°F) and an average of 27°C (82°F). The month experiences significant rainfall, totaling 74 mm (2.9 in) over 19 days, while humidity remains consistently high at 83%. In contrast, March offers a similar temperature range, with a minimum of 25°C (77°F) and a maximum of 28°C (83°F), but it sees a decrease in precipitation, with only 41 mm (1.6 in) falling over 13 days. Despite these differences, humidity in March remains stable at 83%. For more details on March weather in Saipan, you can check Saipan weather in March.
In comparing the weather between December and April, we see some similarities along with slight differences. Both months feature a minimum temperature of around 25°C (78°F) and average temperatures hovering at 27°C (82°F). The maximum temperature stays consistent at approximately 29°C (84°F). However, December experiences slightly higher precipitation, with 74 mm (2.9 in) over 19 days, compared to April's 63 mm (2.5 in) over 16 days. Despite these variations, humidity remains constant at 83% in both months, maintaining a warm and humid climate year-round. For more details on April weather specifically, you can visit Saipan weather in April.
Comparing the weather in December and May reveals a few interesting similarities and subtle differences. Both months have warm temperatures, with December showing a minimum of 25°C (78°F) and an average of 27°C (82°F), while May starts slightly higher with a minimum of 26°C (78°F) and an average of 28°C (82°F). The maximum temperature in both months remains quite close, peaking at 29°C (84°F) in December and 29°C (85°F) in May. Precipitation levels are a bit lower in May, with 59 mm (2.3 in) compared to December's 74 mm (2.9 in), though both months experience frequent rainfall over 19 and 20 days, respectively. Humidity remains high in both months, slightly higher in December at 83% versus 84% in May. For more detailed information about the weather in May, you can check Saipan weather in May.
In December, the weather in Saipan is characterized by slightly cooler temperatures, with an average of 27°C (82°F) and a maximum of 29°C (84°F). The month sees moderate rainfall, totaling 74 mm (2.9 in) over 19 days, with humidity levels around 83%. In contrast, June experiences slightly warmer conditions, with an average temperature of 28°C (83°F) and a maximum of 30°C (86°F). Precipitation is higher in June, reaching 120 mm (4.7 in) over 21 days, while humidity remains similar at 82%. For a more detailed look at the weather during this month, visit Saipan weather in June.
When comparing the weather in December and July, both months feature warm temperatures with December having a minimum of 25°C (78°F) and an average of 27°C (82°F), while July starts slightly warmer with a minimum of 26°C (79°F) and an average of 28°C (82°F). However, July experiences significantly higher rainfall, with 265 mm (10.4 in) over 28 days, compared to December's 74 mm (2.9 in) over 19 days. Despite the increased precipitation in July, the humidity levels are relatively similar, at 83% in December and 80% in July. These contrasting weather patterns highlight July as a wetter month, whereas December offers a slightly drier, though still humid, climate. For more detailed information on July weather, visit Saipan weather in July.
The weather in December features mild temperatures, with averages around 27°C (82°F) and a maximum of 29°C (84°F). While there is some rainfall, totaling 74 mm (2.9 in) over about 19 days, the humidity remains relatively high at 83%. In contrast, August tends to be hotter and wetter, with an average temperature of 28°C (82°F) and a peak of 30°C (86°F). The month sees significantly more precipitation, with 409 mm (16.1 in) falling over 29 days, but the humidity is slightly lower at 80%. For more detailed information on August weather, check Saipan weather in August.
When comparing the weather in December and September, September typically experiences slightly warmer temperatures, with an average high of 30°C (86°F) compared to December's average high of 29°C (84°F). Both months have similar minimum temperatures, hovering around 25°C (78°F). However, September is significantly wetter, with total precipitation reaching 320 mm (12.6 in) over 28 days, while December sees only 74 mm (2.9 in) over 19 days. Humidity levels are fairly comparable, with December at 83% and September slightly lower at 81%. For more details on September weather, visit Saipan weather in September.
When comparing the weather in December and October, December tends to be slightly cooler, with average temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (84°F). In contrast, October has slightly warmer temperatures, with a minimum of 26°C (78°F) and a maximum of 30°C (85°F). October is also significantly wetter, experiencing 365 mm (14.4 in) of precipitation over 28 days, compared to only 74 mm (2.9 in) over 19 days in December. Humidity levels are comparable, with December at 83% and October at 81%. For more details on the weather patterns in October, check out Saipan weather in October.
In comparing the weather of December and November, we observe that December experiences slightly cooler temperatures, with averages of 27°C (82°F) compared to November's 28°C (82°F). Both months see maximum temperatures peaking at around 29°C (84°F for December and 85°F for November). However, November is notably wetter, receiving 141 mm (5.5 in) of precipitation over 23 days, while December has only 74 mm (2.9 in) across 19 days, culminating in a drier climate for the latter month. Humidity remains relatively stable, with December at 83% and November at 82%. For more detailed insights, you can check the Saipan weather in November.
As December ushers in the festive season, Saipan's weather transforms, providing a unique charm distinct from the rest of the year. With average temperatures hovering around a comfortable 27°C (82°F), visitors can expect mild warmth perfect for outdoor activities. However, the island experiences a notable increase in moisture, resulting in an average humidity of 83% and frequent rain, with precipitation occurring on nearly 19 days of the month. This combination of warmth and humidity fosters a lush, vibrant landscape, enhancing the natural beauty of Saipan. For more details on what to expect weather-wise, visit Saipan Climate.