September Weather in Carmel-by-the-Sea, United States

Last updated: February 24, 2025

In Carmel-by-the-Sea, September boasts a delightful climate characterized by an average temperature of 15°C (59°F), with highs reaching up to a sunny 29°C (84°F). Visitors can enjoy the pleasant warmth without the worry of rain, as the month typically records no precipitation days and a modest total of only 4 mm (0.2 in) of rain. With humidity levels averaging around 55%, the weather is comfortable, making it an ideal time for outdoor activities and exploration of the stunning coastal scenery.

September Temperature in Carmel-by-the-Sea

September in Carmel-by-the-Sea brings a delightful transition into warmer days, with temperatures showcasing a notable rise compared to the previous summer months. The minimum temperature hovers at a comfortable 12°C (54°F), while the average climbs to a pleasant 15°C (59°F). This month stands out with a peak maximum temperature soaring to a striking 29°C (84°F), presenting ideal conditions for outdoor activities and beach outings. As summer gracefully exits, visitors can enjoy the warm, inviting atmosphere that September offers, highlighted by clear skies and a refreshing coastal breeze, making it a perfect time to explore this charming seaside town.

September Weather in Carmel-by-the-Sea: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Carmel-by-the-Sea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec535252525355555859585654
Data source: Temperature data for Carmel-by-the-Sea 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 Carmel-by-the-Sea

In Carmel-by-the-Sea, September is characterized by a striking absence of precipitation, mirroring the dry, serene conditions that dominate the summer months. With only 4 mm (0.2 in) of rain and no recorded precipitation days, it's a time when residents and visitors alike can fully enjoy the coastal scenery and outdoor activities without interruption. This dry spell sets the stage for a notable transition into the fall months, as the region begins to see an uptick in rainfall, especially in October, which typically brings an increase to 21 mm (0.8 in) over just a couple of days. This pattern emphasizes the late-summer dry period followed by a gradual return to the wetter season, reflecting the unique climate rhythm of this beautiful coastal enclave.

September Precipitation Trends in Carmel-by-the-Sea

The chart displays monthly precipitation patterns in Carmel-by-the-Sea, 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.
JanFebMarAprMayJunJulAugSepOctNovDec11210693352654542142105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Carmel-by-the-Sea

In Carmel-by-the-Sea during September, humidity levels settle at a comfortable 55%, marking a continuation of the dry trend that begins mid-summer. This is a noticeable drop from the higher levels seen earlier in the year, particularly in the winter months, where humidity hovers around 82% to 84%. As the summer sun fades, September's mild moisture combines perfectly with the region's signature coastal charm, making it a pleasant time to enjoy outdoor activities. Following this month, humidity begins to rise again in October, hinting at the return of the dampness characteristic of the fall and winter seasons. Thus, September serves as a sweet transition, where the warmth of summer meets the cool embrace of autumn, all while maintaining a refreshing dryness.

September Average Humidity in Carmel-by-the-Sea

This chart illustrates the average monthly humidity levels in Carmel-by-the-Sea, 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.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carmel-by-the-Sea

As summer fades into September in Carmel-by-the-Sea, the UV Index begins its gradual decline, dropping to 9, which still falls within the very high exposure category. This level indicates that sun safety precautions remain essential, with a burn time of just 15 minutes. Notably, September sees an easing from the extreme UV conditions of the summer months, reflecting a shift in seasonal sun intensity. However, it's wise to stay vigilant as the sun can still be potent. Looking ahead, the UV Index will continue to decrease through the fall, but early autumn days retain plenty of sunlight, warranting precautions. For detailed information and updates, explore the Carmel-by-the-Sea UV Index.

Maximum UV Index Levels in Carmel-by-the-Sea for September

The chart shows the monthly maximum UV Index (UVI) for Carmel-by-the-Sea 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.
JanFebMarAprMayJunJulAugSepOctNovDec4589111111119753
Data source: Carmel-by-the-Sea 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 Carmel-by-the-Sea

As the summer winds down in Carmel-by-the-Sea, September offers a delightful transition with 309 hours of sunshine. This month's sunshine hours reflect a gradual decline from the peak of 377 hours in July, yet still provide a generous amount of light for outdoor activities. The sun continues to shine brightly as the days grow shorter, ensuring that residents and visitors can bask in the lingering warmth of summer. With a steady decrease through October, when daylight dips to 287 hours, September serves as a beautiful reminder of the sun-drenched summer days, making it an optimal time to explore the stunning coastal scenery before the cooler months set in.

Monthly Sunshine Duration in Carmel-by-the-Sea: September Highlighted

The September sunshine duration represents the total number of hours Carmel-by-the-Sea 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.
JanFebMarAprMayJunJulAugSepOctNovDec164h222h268h301h354h369h377h347h309h287h235h210h
Data source: Carmel-by-the-Sea September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Carmel-by-the-Sea During September

In Carmel-by-the-Sea, September boasts a 58% chance of sunny weather, aligning it with the sunnier months like February and October. This indicates a shift from the cloudier summer, especially July, which sees a dip to 34% sunshine. As summer transitions into fall, the likelihood of clear skies rises, making September an inviting time for visitors seeking pleasant weather. With gentle breezes and coastal charm, this month is perfect for enjoying the scenic beauty and vibrant culture of this coastal gem.

Percentage of Sunny Days in September in Carmel-by-the-Sea

The chart illustrates the percentage of sunny days in Carmel-by-the-Sea 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 Carmel-by-the-Sea experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%58%50%43%51%48%34%52%58%62%57%43%
Data source: Carmel-by-the-Sea September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Carmel-by-the-Sea in September

As September unfolds in Carmel-by-the-Sea, the city experiences a gentle transition from the summer's abundance of daylight to the shorter days of autumn. With approximately 12 hours of sunlight, September marks a slight decrease from the peak of 14 hours enjoyed in June and July. This gradual dimming signals the end of vibrant summer evenings, yet the month retains a warm glow, bridging the gap to the shorter days ahead. As daylight hours dwindle through October and into the winter months, the charming coastal community prepares for the softer, cooler ambiance that the fall season brings.

Average Daylight Hours in Carmel-by-the-Sea for September

The chart illustrates the variation in daylight duration in Carmel-by-the-Sea throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 58m10h 51m11h 59m13h 9m14h 7m14h 36m14h 20m13h 28m12h 21m11h 12m10h 11m9h 41m
Data source: Carmel-by-the-Sea daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Carmel-by-the-Sea

As summer wanes in Carmel-by-the-Sea, September brings a noticeable dip in average wind speeds, with gentle breezes averaging just 3.3 m/s (7 mph). This marks a continuation of the trend observed in the preceding months, where winds gradually softened from a peak in the earlier summer. July and August exhibit the calmest conditions, with average speeds of only 3.8 m/s (9 mph) and 3.4 m/s (8 mph), respectively. However, as autumn approaches in October, winds slightly pick up again, averaging 4.3 m/s (10 mph), hinting at a seasonal shift. The trend reveals a serene September, ideal for those looking to enjoy the tranquil coastal atmosphere before the winds pick up with the change of season.

Average September Wind Speed in Carmel-by-the-Sea

The chart displays monthly wind speed patterns in Carmel-by-the-Sea, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.65.14.74.75.04.53.83.43.3 m/s4.34.05.3
Data source: Carmel-by-the-Sea September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Carmel-by-the-Sea Compares to Other Months

The weather in Carmel-by-the-Sea 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 Carmel-by-the-Sea and find detailed weather information for every month.

September and January present quite contrasting weather patterns. September enjoys a warmer climate, with average temperatures ranging from a mild 15°C (59°F) to a warm 29°C (84°F), and minimal precipitation of just 4 mm, resulting in plentiful sunny days. In stark contrast, January is significantly cooler, with average temperatures dropping to 12°C (54°F), and experiencing considerably higher precipitation at 112 mm over about 10 days, along with a higher humidity level of 82%. For more detailed insights, you can check out the Carmel-by-the-Sea weather in January.

September and February showcase strikingly different weather patterns. In September, temperatures are generally mild to warm, with a minimum of 12°C (54°F) and a maximum of 29°C (84°F), accompanied by low precipitation averaging just 4 mm (0.2 in) over no rainy days, leading to fairly comfortable humidity levels at 55%. In contrast, February experiences cooler temperatures, ranging from a minimum of 6°C (44°F) to a maximum of 18°C (65°F) and significantly higher precipitation, totaling 106 mm (4.2 in) across about 10 rainy days, with the humidity soaring to 84%. For more detailed insights, you can visit Carmel-by-the-Sea weather in February.

In comparing the weather of September and March, September offers a warmer climate with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 29°C (84°F) and an average of 15°C (59°F). It's a relatively dry month, experiencing only 4 mm (0.2 in) of precipitation across 0 days, and the humidity level is a comfortable 55%. In contrast, March features cooler temperatures, with a minimum of 7°C (45°F), an average of 11°C (52°F), and a maximum of 17°C (63°F). This month is much wetter, with precipitation totaling 93 mm (3.7 in) over 12 days, and humidity levels climb significantly to 82%. For a detailed look at weather patterns during March, you can explore Carmel-by-the-Sea weather in March.

When comparing the weather in September to that of April, a notable contrast emerges. September enjoys warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 29°C (84°F), while April experiences cooler conditions, ranging from a minimum of 8°C (47°F) to a maximum of 19°C (67°F). Additionally, September features minimal precipitation, with only 4 mm (0.2 in) occurring over zero days, resulting in a lower humidity level of 55%. In contrast, April is much wetter, receiving 35 mm (1.4 in) of rain across six days and experiencing higher humidity at 78%. For a detailed look at April weather in this area, visit Carmel-by-the-Sea weather in April.

Comparing the weather in September and May reveals notable differences in temperature and precipitation. September tends to be warmer, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 29°C (84°F), while May offers cooler conditions, averaging between 9°C (48°F) and 17°C (63°F). Additionally, September enjoys a dry spell with no recorded precipitation, whereas May experiences more rainfall, totaling 26 mm (1.0 in) over four days. The humidity is also higher in May at 71% compared to September’s 55%, contributing to a more noticeable chill in the spring month. For a closer look at the specifics, you can visit Carmel-by-the-Sea weather in May.

In comparing the weather between September and June, September boasts slightly warmer temperatures, with a minimum of 12°C (54°F) and an average of 15°C (59°F), reaching a maximum of 29°C (84°F). In contrast, June starts with cooler minimum temperatures at 10°C (50°F) and a lower average of 13°C (55°F), peaking at 25°C (78°F). Both months receive minimal precipitation, with September recording 4 mm (0.2 in) and June slightly higher at 5 mm (0.2 in), and both experience zero days of rain. However, June tends to have higher humidity at 64%, compared to September's 55%. For a detailed look at the weather in June, visit Carmel-by-the-Sea weather in June.

When comparing the weather in September and July, September boasts notably warmer temperatures, with average highs reaching 29°C (84°F), compared to July's maximum of just 16°C (61°F). Both months experience minimal precipitation, each recording 4 mm (0.2 in) with no rainy days. Despite slightly higher humidity in July at 58%, September's humidity levels stand at a comfortable 55%. For more detailed insights into July weather, you can check out this link: Carmel-by-the-Sea weather in July.

In comparing the weather of September and August, September boasts a slightly warmer average temperature of 15°C (59°F), compared to August's 14°C (58°F). Additionally, September experiences a higher maximum temperature of 29°C (84°F), while August peaks at a more moderate 21°C (70°F). Both months have minimal precipitation, with September recording 4 mm (0.2 in) and August slightly higher at 5 mm (0.2 in), and both months enjoy dry conditions with no rainy days. Humidity is similar in both months, with September at 55% and August at 54%. For a more detailed look at August weather, you can visit Carmel-by-the-Sea weather in August.

In comparing the weather between September and October, September enjoys relatively warmer temperatures, with a maximum of 29°C (84°F) compared to October's peak of 25°C (77°F). Both months maintain the same average temperature of 15°C (59°F), but October experiences slightly cooler minimum temperatures, dipping to 10°C (51°F). Additionally, October sees a significant increase in precipitation, with 21 mm (0.8 in) over 2 days, while September remains dry with no recorded rainfall. Humidity levels also rise in October, averaging 62% compared to September's 55%. For more detailed information about weather conditions, check out Carmel-by-the-Sea weather in October.

September and November present contrasting weather conditions. In September, temperatures are warmer, with a minimum of 12°C (54°F) and a maximum reaching 29°C (84°F), providing a pleasant average of 15°C (59°F). This month boasts minimal precipitation, with only 4 mm (0.2 in) recorded over no rainy days and a moderate humidity level of 55%. In contrast, November experiences cooler temperatures, with a minimum of 8°C (46°F) and a maximum of only 20°C (68°F), averaging around 14°C (57°F). This month sees a significant increase in rainfall, totaling 42 mm (1.7 in) over five days and higher humidity levels of 78%. For those seeking more details on November’s weather, check out Carmel-by-the-Sea weather in November.

September and December present notably different weather conditions. September boasts warmer temperatures, with a minimum of 12°C (54°F) and maximum reaching 29°C (84°F), along with low precipitation of only 4 mm (0.2 in) across the month. In contrast, December experiences cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 21°C (69°F), along with significantly higher precipitation totaling 105 mm (4.1 in) over 10 days. Additionally, December is marked by increased humidity levels at 80%, compared to September's 55%. For a deeper look into December conditions, check out Carmel-by-the-Sea weather in December.

Compare Carmel-by-the-Sea's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Carmel-by-the-Sea

As summer gracefully transitions into fall, September in Carmel-by-the-Sea offers a delightful respite from the heat, marked by pleasantly mild temperatures and surprisingly low precipitation. With warm days averaging around 15°C while rarely dipping below 12°C, this month stands out as a time of stability and comfort, making it perfect for enjoying the beautiful coastal scenery. Notably, September boasts an enviable record with zero rainy days, allowing visitors to bask in the sunshine without interruption. This unique blend of moderate weather and low humidity levels (around 55%) offers a refreshing escape, making it an ideal time to explore all that Carmel has to offer. For a deeper dive into the year-round conditions, visit Carmel-by-the-Sea Climate.