September Weather in Kihei, United States

Last updated: February 24, 2025

In Kihei, United States, September brings warm and inviting weather, with maximum temperatures reaching 32°C (90°F) and an average of 26°C (79°F), creating a perfect backdrop for outdoor activities. The evenings cool down to a pleasant minimum of 22°C (72°F), allowing for comfortable nights. This month experiences light precipitation of 19 mm (0.7 in) over just 5 days, ensuring that the sun shines bright for most of the month. With a humidity level of 84%, visitors can expect a tropical atmosphere, making September an ideal time to enjoy Kihei's stunning beaches and vibrant culture.

September Temperature in Kihei

In Kihei, September marks a delightful transition as summer begins to wane. The temperatures during this month feature a minimum of 22°C (72°F), rising to an average of 26°C (79°F), with a peak of 32°C (90°F). This slight uptick in warmth compared to the previous months offers a true taste of tropical bliss. As the humidity starts to taper off, the ocean breeze invites both relaxation and adventure, making it an ideal time for beach-goers and water sports enthusiasts. Overall, September in Kihei exudes a vibrant atmosphere, maintaining the ideal summer vibe while gracefully inching towards the cooler autumn months.

September Weather in Kihei: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kihei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec727272747678797979787673
Data source: Temperature data for Kihei generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kihei

September in Kihei marks a transition in precipitation patterns as the summer wanes, recording an average of 19 mm (0.7 in) of rain over 5 days. This relatively dry month follows the slightly wetter August, which received 28 mm (1.1 in), indicating a gradual decrease in rainfall as the region approaches its drier season. With consistent precipitation days throughout the year, September's rainfall is modest compared to the early months and sets the stage for the wetter October. This slight dip in moisture serves as a reminder of Kihei’s generally favorable dry climate, making it a prime destination for sun-seekers even as the seasons shift.

September Precipitation Trends in Kihei

The chart displays monthly precipitation patterns in Kihei, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec307955523716242819502045
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kihei

In September, Kihei experiences a slight dip in humidity, averaging around 84%. This month continues the trend of elevated moisture levels seen throughout the summer, where humidity peaks at 85% in both July and August. As the year progresses, humidity begins to gradually decline, transitioning from the peak summer months towards the slightly drier conditions of fall, with October showing a decrease to 83%. Overall, September offers a comfortable blend of warmth and humidity, making it a pleasant time to enjoy the beautiful landscapes of Kihei.

September Average Humidity in Kihei

This chart illustrates the average monthly humidity levels in Kihei, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%79%82%83%84%85%85%84%83%82%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kihei

As September rolls in, Kihei continues to bask under an extreme UV Index of 13, mirroring the intensity felt throughout the summer months. With a burn time of just 10 minutes, sun safety is crucial this time of year, especially as the UV Index remains consistently high from June to September. This trend emphasizes the importance of protective measures to avoid skin damage and stay safe under the intense Hawaiian sun. As the season transitions into fall, a slight drop is anticipated in October, but for now, those enjoying September’s sunny days should remain vigilant. For more detailed information, check out the Kihei UV Index.

Maximum UV Index Levels in Kihei for September

The chart shows the monthly maximum UV Index (UVI) for Kihei in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec810111212131313131188
Data source: Kihei September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Kihei

As summer gracefully transitions into fall, September in Kihei continues to bask in abundant sunshine, boasting 316 hours of glorious daylight. This delightful month maintains the high standards set by its predecessors, offering slightly less sun than July and August, yet still far exceeding the winter months like January and November. The trend is clear: as the year progresses from the darker days of winter to the vibrant summer, the sun shines more brightly across the skies of Kihei, providing an ideal backdrop for relaxation and outdoor adventures. September’s warmth beckons both locals and visitors to enjoy the magical sunsets and breathtaking beaches, making it a remarkable point in the sun-soaked rhythm of this stunning locale.

Monthly Sunshine Duration in Kihei: September Highlighted

The September sunshine duration represents the total number of hours Kihei experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec224h257h291h310h335h341h348h335h316h301h271h264h
Data source: Kihei September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kihei During September

In September, Kihei enjoys a 58% chance of sunny weather, making it a delightful transition from the sun-drenched months of summer. As the peak of summer fades, with August leading the pack at 69%, the likelihood of sunny days still remains robust. Notably, this percentage is slightly above the early spring months, reflecting a consistent trend of relatively high sunshine as autumn approaches. Following September, October sees a slight increase to 64%, suggesting that the sunny weather is quite persistent in this beautiful coastal town. Overall, if you’re planning a visit in September, you can expect a good mix of sun and warmth, keeping in line with Kihei's charming climate.

Percentage of Sunny Days in September in Kihei

The chart illustrates the percentage of sunny days in Kihei throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Kihei experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec54%62%49%56%57%56%51%69%58%64%60%38%
Data source: Kihei September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kihei in September

As September rolls into Kihei, the days remain pleasantly bright, with an average daylight duration of 12 hours. This month continues the trend of summer's generous sunlight, holding steady at the same level as both April and August. Following the peak daylight of 13 hours in the warmer months of May through July, September marks a gradual transition toward the shorter days of autumn. As the season progresses, daylight will continue to wane, nudging towards 11 hours in October. The consistent daylight during September invites residents and visitors alike to relish the myriad of outdoor activities that this picturesque Hawaiian locale has to offer before the year begins to dim.

Average Daylight Hours in Kihei for September

The chart illustrates the variation in daylight duration in Kihei throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 1m11h 27m12h 2m12h 37m13h 7m13h 21m13h 13m12h 47m12h 13m11h 38m11h 7m10h 52m
Data source: Kihei daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kihei

In Kihei, United States, September brings a gentle breeze, with an average wind speed of 3.2 m/s (7 mph). This marks a subtle decline from the slightly more vigorous summer winds, averaging around 3.5 m/s in July and 3.3 m/s in August. As we transition into fall, the winds begin to settle, aligning closely with the consistent patterns observed earlier in the year. Notably, January through May maintain a steady average of 3.0 to 3.3 m/s, showcasing a generally calm atmosphere. With October's increase to 3.4 m/s, Kihei's wind profile remains dynamic yet tranquil, inviting residents and visitors alike to enjoy the idyllic coastal landscape with just the right amount of breeze.

Average September Wind Speed in Kihei

The chart displays monthly wind speed patterns in Kihei, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.13.13.33.03.02.93.53.33.2 m/s3.42.43.2
Data source: Kihei September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kihei Compares to Other Months

The weather in Kihei 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 Kihei and find detailed weather information for every month.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F) and an average around 26°C (79°F). The humidity is quite high at 84%, but the precipitation is fairly low at 19 mm (0.7 in) over five days. In contrast, January experiences slightly cooler temperatures, with a minimum of 17°C (63°F), an average of 22°C (73°F), and a maximum of 28°C (82°F). Despite having a higher total precipitation of 30 mm (1.2 in) also over five days, January's humidity is lower at 78%. For more details on January's climate, you can check the Kihei weather in January.

When comparing the weather in September and February, notable differences emerge in temperature and precipitation. September generally boasts warmer temperatures, with averages around 26°C (79°F) and maximums reaching 32°C (90°F), while February presents slightly cooler conditions, with average temperatures of 22°C (72°F) and maximums of 28°C (82°F). In terms of rainfall, September sees only 19 mm (0.7 in) of precipitation over about 5 days, making it relatively dry. Conversely, February experiences significantly higher rainfall, accumulating 78 mm (3.1 in) over 9 days. Despite the increased rainfall in February, humidity levels remain comparable, at 84% in September and 79% in February. For more detailed insights on February weather, you can visit Kihei weather in February.

In September, the weather typically brings warmer temperatures, with an average of 26°C (79°F) and highs reaching up to 32°C (90°F). The month experiences relatively low precipitation, with only about 19 mm (0.7 in) over 5 days, and a high humidity level of 84%. In contrast, March offers slightly cooler conditions, featuring an average temperature of 22°C (73°F) and maximums of 28°C (83°F). However, it is wetter, receiving approximately 55 mm (2.2 in) of rainfall over 9 days and slightly lower humidity at 79%. For more details on March weather, visit Kihei weather in March.

In September, temperatures are generally warmer, with a minimum of 22°C (72°F) and an average of 26°C (79°F), reaching highs of 32°C (90°F). The month experiences relatively low precipitation, totaling just 19 mm (0.7 in) over about 5 days, coupled with a high humidity level of 84%. In contrast, April sees slightly cooler temperatures, starting at a minimum of 18°C (65°F) and averaging around 23°C (74°F), peaking at 29°C (84°F). However, April is significantly wetter, with 52 mm (2.1 in) of rainfall spread over approximately 10 days, while humidity remains comparable at 82%. For more detailed information, check out Kihei weather in April.

September and May present contrasting yet pleasant weather conditions. In September, temperatures are generally warmer, with a minimum of 22°C (72°F) and an average of 26°C (79°F), peaking at a maximum of 32°C (90°F). The month sees relatively low precipitation at 19 mm (0.7 in) over about 5 days, coupled with high humidity at 84%. In comparison, May experiences slightly cooler temperatures, with a minimum of 18°C (65°F), an average of 24°C (76°F), and a maximum of 30°C (87°F). However, it has more rain, totaling 37 mm (1.5 in) over 6 days, and a humidity level that is just a touch lower at 83%. For more insights, you can explore Kihei weather in May.

In comparing the weather between September and June, both months exhibit warm temperatures and high humidity levels, typically hovering around 84%. September tends to be slightly warmer, featuring a minimum temperature of 22°C (72°F) and an average of 26°C (79°F), while June has a slightly lower average of 25°C (78°F) with a minimum of 21°C (70°F). Additionally, September occasionally reaches a maximum of 32°C (90°F), compared to June's maximum of 30°C (87°F). Precipitation levels are comparable, with September receiving 19 mm (0.7 in) over about 5 days and June accumulating 15 mm (0.6 in) over 4 days. For more specific insights into June weather, you can check out Kihei weather in June.

When comparing the weather in September and July, both months exhibit similar average temperatures, with September featuring a minimum of 22°C (72°F) and a maximum of 32°C (90°F), while July has slightly lower minimum and maximum temperatures at 21°C (71°F) and 31°C (88°F) respectively. Precipitation levels differ slightly as well, with September receiving 19 mm (0.7 in) of rain compared to July's 24 mm (0.9 in), although both months experience rain on about five days. Humidity remains high in both months, with September at 84% and July at 85%, giving the air a similarly muggy feel. For more detailed weather information, you can visit Kihei weather in July.

In September, the weather remains quite warm, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), and an average of 26°C (79°F). While the humidity slightly decreases to 84%, there is also a reduction in precipitation, with only 19 mm (0.7 in) recorded over 5 days. In contrast, August has similar temperature patterns, with a minimum of 21°C (71°F) and a maximum of 32°C (89°F), but experiences higher precipitation at 28 mm (1.1 in) over the same number of days, along with slightly higher humidity at 85%. For a more detailed look at the weather specifics, you can check Kihei weather in August.

In comparing the weather between September and October, September tends to be slightly warmer, with average temperatures reaching 26°C (79°F) and maximums of 32°C (90°F). October, on the other hand, sees a slight decrease in average temperature to 25°C (78°F) and a maximum of 31°C (88°F). Precipitation also increases significantly in October, rising to 50 mm (2.0 in) over 8 days, compared to September's milder 19 mm (0.7 in) over 5 days. Humidity remains similar in both months, with September at 84% and October at 83%. For more detailed information, check out Kihei weather in October.

In September, the weather tends to be warmer, with average temperatures around 26°C (79°F) and maximum highs reaching 32°C (90°F). The month sees 19 mm (0.7 in) of precipitation over approximately 5 days, along with a high humidity level of 84%. In contrast, November experiences slightly cooler temperatures, with an average of 24°C (76°F) and maximum temperatures peaking at 30°C (87°F). Precipitation is marginally higher at 20 mm (0.8 in) over about 6 days, while humidity remains relatively similar at 82%. For more detailed insights on November's weather, you can visit Kihei weather in November.

In September, the weather is warmer with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F) and an average of 26°C (79°F). The month sees relatively low precipitation, with just 19 mm (0.7 in) falling over 5 days, contributing to a humid atmosphere with 84% humidity. In contrast, December experiences cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 29°C (84°F), averaging around 23°C (74°F). The precipitation increases in December to 45 mm (1.8 in) spread over 8 days, while humidity slightly decreases to 81%. For a more detailed look at the December weather, check out Kihei weather in December.

Compare Kihei's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kihei

As September rolls in, Kihei experiences a delightful transition in weather, marked by warm temperatures and a hint of tropical humidity. The average warmth settles around a comfortable 26°C (79°F), with the delightfully predictable warmth peaking at 32°C (90°F) on the hottest days. Unlike the heavier rains of winter months, September offers only a few brief showers, totaling just 19 mm across about five days. This makes the month perfect for those who enjoy sunny beach days interspersed with occasional refreshing rain. Overall, September strikes a lovely balance, presenting a fantastic time to experience the beauty of Kihei. For a deeper understanding of seasonal shifts, explore Kihei Climate.