September weather forecastTrinidad, CA
September
Weather in September
September, the first month of the autumn in Trinidad, is still a pleasant month, with an average temperature ranging between max 68°F (20°C) and min 51.1°F (10.6°C).Temperature
Trinidad experiences an average high-temperature of a still pleasant 68°F (20°C) in September, subtly different from August's 68.9°F (20.5°C). September brings Trinidad a consistent average low-temperature of 51.1°F (10.6°C).Humidity
The months with the lowest humidity in Trinidad are September and October, with an average relative humidity of 76%.Rainfall
In September, in Trinidad, the rain falls for 4.6 days. Throughout September, 0.83" (21mm) of precipitation is accumulated. In Trinidad, during the entire year, the rain falls for 114.9 days and collects up to 31.61" (803mm) of precipitation.Snowfall
January, March through December are months without snowfall in Trinidad.Ocean temperature
In Trinidad, California, the average seawater temperature in September is 52.7°F (11.5°C).Note: In 52.7°F (11.5°C), cold shock and rapid breathing can occur when swimming at temperatures below 50°F (10°C).
Daylight
In September, the average length of the day in Trinidad is 12h and 27min.On the first day of September, sunrise is at 6:44 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm PDT.
Sunshine
The average sunshine in September in Trinidad, California, is 10.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Trinidad, CA
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).
Average pressure in September
Trinidad, CA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Trinidad, CA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Trinidad, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (82%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in September
Trinidad, CA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Trinidad, CA
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is March (16.8 days).
The months with the least rainy days are July and August (2.2 days).
Average snowfall in September
Trinidad, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Trinidad, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Trinidad, CA
- Average sea temperature in September: 52.7°F
The best month for swimming (with the highest average sea temperature) is October (53°F).
The coldest months (with the lowest average sea temperature) are January, February and April (51.4°F).
Average daylight in September /
Average sunshine in September
Trinidad, CA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Trinidad, CA
- Average sunshine days in September: 24.7 days
The months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).
Average UV index in September
Trinidad, CA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Trinidad, CA
- Average cloud cover in September: 19
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in September
Trinidad, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
