Last updated: August 31, 2025
Experience the tropical charm of Saipan, Northern Mariana Islands in August, where temperatures range from a comfortable 25°C (78°F) to a warm 30°C (86°F), with an average of 28°C (82°F) inviting you outdoors. This month witnesses lush greenery due to a notable 409 mm (16.1 in) of rainfall spread across 29 days, creating a vibrant and lively atmosphere. With humidity levels lingering around 80%, prepare for the refreshing embrace of island breezes that enhance the overall enchanting experience of this beautiful locale.
In August, Saipan, Northern Mariana Islands, experiences pleasant tropical temperatures that are characteristic of the region. With a minimum temperature of 25°C (78°F) and a comfortable average hovering around 28°C (82°F), visitors can expect ideal conditions for beach escapades and outdoor activities. The maximum temperature reaches 30°C (86°F), maintaining a warm and inviting atmosphere. Notably, August continues the trend of consistent warmth established in the preceding months, as it mirrors the temperatures of July and reflects a stable climate pattern throughout the summer. This enduring warmth, coupled with refreshing ocean breezes, makes August a delightful time to explore Saipan’s stunning landscapes and vibrant culture.
August in Saipan, Northern Mariana Islands, witnesses a notable surge in precipitation, with an impressive 409 mm (16.1 in) of rainfall over 29 days—the highest monthly total of the year. This substantial increase follows the prior months, particularly July, which itself experienced a significant downpour of 265 mm (10.4 in) over 28 days. As the peak of the rainy season, August sets a stark contrast to the drier months at the year's start, where precipitation levels hovered around 52 mm to 63 mm. The trend indicates that as the summer progresses, both the intensity and frequency of rainfalls escalate, reaching a crescendo in August, before tapering off into the autumn months. This pattern not only shapes the region's lush landscapes but also emphasizes the tropical climate's characteristic variability.
In August, Saipan experiences a humidity level of 80%, which marks a slight dip from the more humid months that precede it. This lower humidity aligns with the trend of gradually decreasing moisture that begins in July, after peaking at 84% in May. Throughout the year, humidity levels in Saipan remain relatively high, fluctuating between 80% and 84%. The steady numbers, particularly in the summer months, underscore the tropical climate of this stunning island paradise, where visitors can expect warm, muggy conditions year-round. As September approaches, humidity begins to rise again, signaling that the lush, vibrant atmosphere of Saipan is never far from its characteristic moisture.
In August, the UV Index in Saipan, Northern Mariana Islands, remains notably high at 14, categorizing it as extreme with a burn time of just 10 minutes. This trend of consistently elevated UV levels continues from the previous months of July and June, which also recorded a UV Index of 14. As the year progresses, starting from January's very high index of 10, the region experiences a steady surge in UV radiation, peaking at 15 in April. By maintaining this extreme exposure throughout the summer, it’s crucial for residents and visitors alike to take protective measures against sunburn and long-term skin damage. Learn more about how to stay safe with the Saipan UV Index.
UV Risk Categories
August in Saipan, Northern Mariana Islands, brings a delightful blend of sunshine, boasting 275 hours of brightness. This month stands as a charming transition from the summer peak, where May shines the brightest with 339 hours of sunshine. Following an energetic July with 303 hours, August still enjoys ample daylight, although it marks a notable dip compared to the vibrant summer months. As we head toward fall, the sunshine gradually declines, with September seeing a further decrease to 264 hours. The trend clearly suggests that while August retains the essence of summer, it gracefully edges towards the more serene autumn days, inviting a perfect balance of warmth and comfort.
Saipan's weather patterns reveal a striking shift as summer progresses, particularly in August, when the chance of sunny days plummets to a mere 14%. The trend leading up to this month shows a gradual decline in sunshine, starting from 77% in March and dropping significantly through July. This decrease underscores a notable transition as the archipelago moves deeper into its wet season. With such a low probability of clear skies in August, visitors should brace for picturesque, albeit overcast, landscapes where sunlit moments become a rare delight amidst the tropical allure.
In August, Saipan enjoys 12 hours of daylight, maintaining a consistent rhythm seen in the preceding months of June, July, and leading into September. The island experiences its longest days in June, reaching 13 hours, before gently tapering off to a stable 12 hours from July through September. This pattern highlights a gradual transition as the summer fades, ensuring that residents and visitors alike can relish ample daylight for outdoor adventures and relaxation. The daylight duration then returns to 11 hours in October, reflecting a shift as the year progresses towards cooler months. This balance of light fosters a vibrant atmosphere, perfect for enjoying the island's beauty throughout the warm summer days.
In August, the winds in Saipan, Northern Mariana Islands, meet a refreshing norm with an average speed of 5.9 m/s (13 mph), providing a gentle breeze as the summer winds down. Following a peak in May at 8.0 m/s and a dip in April to 4.8 m/s, August experiences a slight decline compared to the bustling mid-year months. Interestingly, this has been a consistent trend, reflecting a gradual decrease in wind speeds from the vibrant summer months into the more tranquil autumn. With inching speeds noted throughout September and October, averaging 5.5 m/s and 5.4 m/s respectively, the island’s breezy atmosphere remains perfect for serene seaside strolls and leisurely afternoons. Thus, while August may signal a waning of summer's winds, it offers a beautiful balance that is characteristic of Saipan's dynamic coastal environment.
Weather in Saipan varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Saipan, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January showcase distinct weather patterns, highlighting the tropical climate's variation across the year. In August, temperatures range from a minimum of 25°C to a maximum of 30°C, with an average of 28°C. This month experiences significant rainfall, accumulating 409 mm over 29 days, contributing to a high humidity level of 80%. In contrast, January maintains slightly cooler temperatures, with a minimum of 24°C and a maximum of 28°C, while averaging 27°C. Precipitation sharply decreases to 52 mm over just 13 days, and humidity rises slightly to 83%. For more detailed information on January's weather, visit Saipan weather in January.
When comparing the weather in August and February, there are notable differences. August typically sees higher temperatures, with daily averages around 28°C (82°F) and maximums reaching 30°C (86°F), while February's temperatures are slightly cooler, averaging 26°C (80°F) with a maximum of 28°C (83°F). In terms of precipitation, August is significantly wetter, experiencing 409 mm (16.1 in) over 29 days, whereas February has much lower rainfall at just 57 mm (2.2 in) across 17 days. Humidity levels remain fairly consistent, with August at 80% and February at 81%. For a more detailed look at February's weather conditions, you can check out this link: Saipan weather in February.
In comparing the weather of August and March, we see notable differences despite their similar temperature ranges. In August, the minimum temperature hovers around 25°C (78°F), with an average of 28°C (82°F) and a peak of 30°C (86°F). This month is characterized by significant rainfall, receiving 409 mm (16.1 in) over 29 days, resulting in a humidity level of around 80%. In contrast, March also starts with a minimum temperature of 25°C (77°F), averaging slightly cooler at 27°C (80°F) and maxing out at 28°C (83°F). However, March experiences far less precipitation, totaling only 41 mm (1.6 in) over 13 days, and maintains a slightly higher humidity of 83%. For more detailed information, you can check Saipan weather in March.
When comparing the weather in August and April, both months present warm temperatures, but August tends to be more humid and rainier. In August, the minimum temperature is around 25°C (78°F), with an average of 28°C (82°F) and a maximum of 30°C (86°F). This month experiences significant rainfall, with 409 mm (16.1 in) spread over 29 days, resulting in high humidity levels of 80%. In contrast, April offers slightly cooler temperatures, with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (84°F). Rainfall is much less, totaling 63 mm (2.5 in) across 16 days, and humidity is slightly higher at 83%. For more specifics on the weather patterns in April, you can visit Saipan weather in April.
When comparing the weather in August and May, both months exhibit warm temperatures, with averages hovering around 28°C (82°F). However, August tends to be slightly hotter with maximum temperatures reaching up to 30°C (86°F), compared to May's peak of 29°C (85°F). Additionally, August experiences significantly higher precipitation, with 409 mm (16.1 in) falling over 29 days, in stark contrast to May's 59 mm (2.3 in) over 20 days. Humidity levels are relatively similar, though August is slightly lower at 80% compared to May's 84%. For a detailed look into the weather during May, you can visit Saipan weather in May.
When comparing the weather in August and June, both months exhibit similar temperature ranges, with minimums around 25°C (78°F), averages around 28°C (82°F), and maximums peaking at 30°C (86°F). However, August is significantly wetter, receiving 409 mm (16.1 in) of precipitation over 29 days, compared to June's 120 mm (4.7 in) across 21 days. Additionally, humidity levels are slightly lower in June at 82%, compared to 80% in August, making June feel a bit more humid despite similar temperatures. For more detailed information on June weather, you can check Saipan weather in June.
In comparing the weather between July and August, both months exhibit similar temperature patterns, with average temperatures around 28°C (82°F) and maximum highs reaching 30°C (86°F). However, August experiences a significant increase in precipitation, receiving 409 mm (16.1 in) over 29 days, while July records a lower total of 265 mm (10.4 in) across 28 days. The humidity levels remain consistent at 80% for both months, contributing to a tropical feel. For more detailed information on July weather, you can visit Saipan weather in July.
In August, the weather is characterized by warm temperatures with a consistent minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of 30°C (86°F). However, this month also experiences significant rainfall, with 409 mm (16.1 in) of precipitation over 29 days and a humidity level of 80%. In contrast, September maintains a similar temperature profile, with the same minimum, average, and maximum temperatures. However, it sees a decrease in precipitation to 320 mm (12.6 in) over 28 days, while humidity slightly increases to 81%. For more details on the weather in September, you can check Saipan weather in September.
August and October exhibit similar temperature ranges, with August having a minimum of 25°C (78°F) and October only slightly higher at 26°C (78°F). Both months maintain an average of 28°C (82°F) and max temperatures hovering around 30°C (86°F) in August and 30°C (85°F) in October. However, August tends to be wetter, receiving 409 mm (16.1 in) of precipitation over 29 days compared to October's 365 mm (14.4 in) over 28 days. Humidity levels are also quite similar, with August at 80% and October slightly higher at 81%. For more detailed insights, you can view Saipan weather in October.
August and November weather in Saipan present some interesting contrasts. Both months feature similar average temperatures around 28°C (82°F), with August experiencing a slightly higher maximum of 30°C (86°F) compared to November’s 29°C (85°F). However, August is notably wetter, boasting a staggering 409 mm (16.1 in) of precipitation over 29 days, while November sees a much lighter rainfall of 141 mm (5.5 in) over 23 days. Additionally, humidity remains relatively high in both months, with November showing a marginally higher level at 82% compared to August's 80%. For more detailed information on November weather, you can check Saipan weather in November.
In August, the weather is hot and humid, with average temperatures hovering around 28°C (82°F) and high levels of precipitation totaling 409 mm (16.1 in) over 29 days, making it one of the wettest months. In contrast, December experiences slightly cooler temperatures, with an average of 27°C (82°F) and significantly less rainfall, totaling only 74 mm (2.9 in) across 19 days. While both months maintain high humidity levels—80% in August and 83% in December—December's relatively drier conditions make it a more pleasant time for outdoor activities. For more details, check out Saipan weather in December.
As August wraps Saipan in its warm embrace, the island experiences a notably humid atmosphere, with an average temperature that stays consistently balmy. This month stands out with its frequent rainfall, as nearly every day brings some precipitation, contributing to the lush beauty of the landscape. June and July may have set the stage, but August takes the weather up a notch, making it the wettest month of the year. If you want to explore how Saipan’s climate changes throughout the year, check out Saipan Climate.