Last updated: February 24, 2025
In Waimea, United States, September brings a blend of warmth and moisture, characterized by a maximum temperature reaching 30°C (86°F) and an average of 23°C (74°F). The nights cool down to a minimum of 18°C (64°F), providing a comfortable respite. However, the month is marked by significant precipitation, totaling 222 mm (8.8 in) over 28 days, leading to a notably humid atmosphere at 82%. This combination of warmth and consistent rainfall creates a lush environment, ideal for nature enthusiasts and those seeking a vibrant tropical experience.
September in Waimea brings a delightful climate, with temperatures reflecting the peak of summer's warmth. The average temperature holds steady at a comfortable 23°C (74°F), while daytime highs can reach up to 30°C (86°F). This month marks a subtle transition, as the minimum temperature remains fairly consistent around 18°C (64°F), similar to the previous months. As summer yields to autumn, the overall trend indicates a gradual cooling ahead, yet September still enjoys some of the warmest days of the year. With balmy evenings and sunny days, it’s the perfect time to explore this picturesque locale.
September in Waimea brings a noticeable dip in precipitation compared to the preceding months, with 222 mm (8.8 in) falling over 28 days. This marks a significant decrease from the high of 369 mm (14.5 in) recorded in August, reflecting a transition from the peak rainy season. Despite this reduction, September still retains a robust level of rainfall, contributing to the region's lush greenery. The number of wet days remains substantial, aligning closely with the wetter months earlier in the year, but the overall trend suggests a gradual easing as the season shifts. As the year progresses, residents and visitors alike can appreciate the tempering of rainfall while still enjoying the vibrant landscapes characteristic of Waimea.
In Waimea, September marks a noteworthy transition in humidity levels, with an average of 82%, slightly dropping from the peak of 84% observed in August. This month typically experiences a comfortable embrace of moisture that reflects a broader trend in the region's climate, as humidity steadily rises from 79% in January to its summer zenith in mid-year. Following this peak, September illustrates a subtle decline, hinting at the approaching fall season. Despite this mild dip, the humidity remains relatively high, maintaining the lush and vibrant environment that Waimea is known for throughout the year.
In September, Waimea experiences a UV Index of 13, categorizing it as extreme with a swift burn time of just 10 minutes. This marks a slight decrease from the peak UV Index levels of 14 seen in both July and August, yet the risk remains high. Throughout the months leading up to September, the trend shows a consistently extreme UV exposure, making sun protection essential for anyone spending time outdoors. As the seasons transition into fall, residents and visitors must stay vigilant to avoid sunburn. To understand the nuances of UV exposure in Waimea, check out this resource: Waimea UV Index.
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As summer gracefully transitions into fall, September in Waimea continues to bask in a generous 311 hours of sunshine, marking a delightful end to the sun-drenched months. After experiencing a peak in July with 343 hours of sun, light levels begin to gradually recede as the year heads into autumn. This month benefits from the lingering warmth of summer while still showcasing a subtle decline compared to the vibrant sunshine of earlier months like May and June. With each passing week, Waimea embraces the softer glow of fall, creating a beautiful backdrop for outdoor activities before the cooler months settle in.
In Waimea, United States, September boasts a 47% chance of sunny weather, marking it as one of the more favorable months for sunshine. This month sits just slightly above the yearly average, with a notable increase following the typically cooler summer months of June and July, which show only 38% and 40% chances of sun, respectively. The data suggests a gradual recovery in sunlit days as we transition from the hotter summer into the autumn season. Interestingly, September ties with March and November in its likelihood of sunny weather, highlighting it as a stable choice for those seeking pleasant outdoor experiences in early fall. Despite a dip in brightness during the earlier spring months and contrasting cloudiness in winter, September emerges as a refreshing period for those longing to bask in the sun.
As September arrives in Waimea, daylight begins to gently wane, with the sun gracing the skies for 12 hours each day. This marks a continuation of the steady daylight pattern observed since spring, when longer days peaked in May and June at a glorious 13 hours. As summer slips into autumn, the shift becomes evident; August also enjoyed 12 hours of daylight, signaling a gradual transition. The trend reveals a rhythmic ebb and flow throughout the year, with daylight reaching its zenith in the summer months before retreating to 11 hours by October and further into the winter months. This cyclical dance of light shapes both daily life and the natural landscape of Waimea, inviting reflection as the days grow shorter.
As summer fades into fall, September in Waimea brings a refreshing breeze with an average wind speed of 2.7 m/s (6 mph), mirroring the gentle winds of August. This steady airflow marks a slight uptick from the spring months, consistently maintaining a tranquil yet invigorating atmosphere. The wind speeds gradually ramped up through the warmer months, peaking in July at 3.0 m/s (7 mph), before gently easing back as autumn approaches. As temperatures cool down, the winds not only add a touch of crispness to the air but also hint at the shifting seasons, setting the stage for the serene beauty that awaits in the coming months.
The weather in Waimea changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Waimea and find detailed weather information for every month.
When comparing the weather in September and January, notable differences emerge. September tends to be warmer, with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 30°C (86°F) and an average of 23°C (74°F). The month also experiences significant rainfall, amounting to 222 mm (8.8 in) over 28 days, alongside high humidity averaging 82%. In contrast, January is cooler, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 27°C (80°F) and an average of 20°C (68°F). The precipitation drops to 112 mm (4.4 in) over 19 days, and the humidity remains relatively stable at 79%. For more specific details about January weather, you can check Waimea weather in January.
In comparison to September, February experiences generally milder temperatures, with a minimum of 12°C (53°F) compared to September's 18°C (64°F) and an average of 20°C (67°F) versus September's 23°C (74°F). Maximum temperatures in February also reach a lower peak of 26°C (80°F), while September can scale up to 30°C (86°F). Precipitation is less frequent in February, totaling 140 mm (5.5 in) over 19 days, compared to September’s significant 222 mm (8.8 in) spread over 28 days. Humidity levels are similar, with February at 79% and September at 82%, making both months relatively humid but February slightly drier overall. For more insights, check out Waimea weather in February.
When comparing the weather in September and March, September tends to be warmer and wetter. In September, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (86°F) with an average of 23°C (74°F). The month sees significant rainfall, totaling 222 mm (8.8 in) over 28 days, and the humidity is relatively high at 82%. In contrast, March features cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 27°C (81°F), averaging around 20°C (69°F). Rainfall in March is considerably lower at 117 mm (4.6 in), spread over 22 days, and humidity decreases slightly to 77%. For more detailed information about the weather in Waimea during March, you can visit Waimea weather in March.
In comparing the weather of September and April, we can observe that both months feature mild temperatures, but September tends to be slightly warmer. In September, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (86°F), with an average temperature of 23°C (74°F). In contrast, April experiences a slightly cooler range, with temperatures dipping to a minimum of 15°C (58°F) and peaking at 27°C (81°F), averaging 21°C (70°F).
Precipitation levels also differ, as September records 222 mm (8.8 in) over 28 days, while April has a lower total of 182 mm (7.2 in) spread over 27 days. The humidity levels are quite similar, with September at 82% and April at 80%. Overall, while both months are characterized by frequent rain and mild temperatures, September is generally warmer and wetter than April. To learn more about the weather specifics in April, visit Waimea weather in April.
When comparing the weather in September and May, September tends to be slightly warmer, with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 30°C (86°F), whereas May features a minimum of 14°C (58°F) and a maximum of 28°C (83°F). Both months experience a similar number of rainy days, with September receiving 222 mm (8.8 in) and May slightly more at 252 mm (9.9 in). Humidity levels are comparable as well, with September at 82% and May at 80%. For a closer look at May's climate, you can check Waimea weather in May.
When comparing the weather in September and June, both months exhibit similar average temperatures, with September having a slightly higher maximum of 30°C (86°F) compared to June's 29°C (84°F). However, June experiences slightly higher precipitation, measuring 263 mm (10.4 in) over 29 days, while September has 222 mm (8.8 in) over 28 days. Interestingly, both months maintain the same humidity level of 82%. For a closer look at June's specific weather patterns, you can check Waimea weather in June.
When comparing the weather in September to that of July, we can observe some notable similarities and differences. Both months have a minimum temperature hovering around 18°C (64°F), but September has a slightly higher maximum temperature of 30°C (86°F) compared to July's 29°C (84°F). The average temperature remains consistent in both months at 23°C (74°F). However, September tends to be drier, with 222 mm (8.8 in) of precipitation over 28 days, whereas July experiences 286 mm (11.3 in) over a full 30 days. Humidity levels remain fairly comparable, with September at 82% and July at 83%. For a closer look at the specifics of July weather, you can check Waimea weather in July.
In comparing the weather of September and August, we see that both months share similar temperature ranges, with a minimum of 18°C (64°F) and an average of 23°C (74°F). However, September is slightly warmer, reaching a maximum of 30°C (86°F) compared to August's maximum of 29°C (85°F). Precipitation statistics reveal that September experiences less rainfall, with 222 mm (8.8 in) over 28 days, while August is considerably wetter, recording 369 mm (14.5 in) across 30 days. Notably, humidity levels remain high in both months, with September at 82% and August at 84%. For more detailed insights on August weather patterns, you can refer to Waimea weather in August.
September and October exhibit similar temperature ranges, with both months showing a minimum temperature around 16-18°C (62-64°F), an average of approximately 23°C (73-74°F), and a maximum that reaches up to 30°C (86°F). However, September tends to be slightly wetter, with 222 mm (8.8 in) of precipitation over 28 days compared to October's 196 mm (7.7 in) across 27 days. Humidity remains high in both months, with September at 82% and October slightly higher at 83%. For more detailed insights into the weather during this time, check out Waimea weather in October.
In comparing the weather between September and November, we find that September typically offers slightly warmer temperatures, with a minimum of 18°C (64°F) and an average of 23°C (74°F), compared to November's minimum of 15°C (59°F) and average of 22°C (71°F). Both months experience high humidity, with September at 82% and November at 83%, but September sees more precipitation, averaging 222 mm (8.8 in) over 28 days, while November receives 127 mm (5.0 in) over 22 days. This makes November a drier month overall, ideal for those looking to avoid the heaviest rains. For more specific weather details during this time, check out Waimea weather in November.
The weather in September tends to be warmer and wetter compared to December. In September, temperatures range from a minimum of 18°C (64°F) to a maximum of 30°C (86°F) with an average of 23°C (74°F), while December sees slightly cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 28°C (82°F), averaging 20°C (69°F). Furthermore, September experiences higher precipitation at 222 mm (8.8 in) over 28 days, compared to December's 179 mm (7.1 in) across 22 days. Humidity levels remain relatively consistent, with September at 82% and December at 81%. For a closer look at December’s climate specifics, check out Waimea weather in December.
As September unfolds in Waimea, the weather presents a distinct shift characterized by increased humidity and a notable rise in precipitation. With an average temperature lingering around a comfortable 23°C, the days tend to be warm but are often accompanied by cloudy skies and a high chance of rain, making it one of the wetter months of the year. This contrasts sharply with drier months earlier in the summer, creating a lush landscape that invites exploration. While you may experience up to 28 days of rain, the vibrant surroundings make it a unique time to visit. For more insights on seasonal changes, check out Waimea Climate.