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Placentia Weather

In Placentia, the winters are long, partly cloudy and cool. The summers are warm, arid, short and clear. Throughout the year, the temperature typically varies from 45°F to 87°F. The temperature rarely goes below 38°F or above 96°F.


The hot seasons in Seal Beach may last for 2.8 months. From July 1 to September 27, the average daily high temperature is above 83°F. August 23 is the hottest day of the year, and it has an average high of 87°F and low of 65°F.

The cool season stretches for 3.9 months. It lasts from November 26 to March 22, and its average daily high temperature goes below 71°F. December 27 is the coldest day of the year, and its average low is 45°F and high of 67°F.

Sidi Smail, Morocco (5,944 miles away), Uitenhage, South Africa (10,351 miles), and Perth, Australia (9,364 miles) are the far-away foreign places with temperatures most comparable to Placentia.

Placentia has the average percentage of the sky covered by cloud with significant seasonal variation as the year unfolds.


Around April 24 to around November 4, the clearer part of the year in Seal Beach happens. This situation lasts for 6.3 months. The clearest day of the year is September 7. On that day, the sky is clear, mostly clear, or partly cloudy 91% of the time. It’s mostly cloudy or overcast 9% of the time.

Around November 4 to April 24 is the cloudier part of the year. This situation lasts for 5.7 months. The cloudiest part of the year is February 20. On that day, the sky is mostly cloudy or overcast 43% of the time. It’s mostly clear, clear or partly clear 57% of the time.


When there’s at least 0.4 inches of liquid-equivalent or liquid precipitation, it’s when a day is considered a wet day. In Placentia, the chance of having wet days varies throughout the year.

The wetter season happens around November 22 to March 31. This situation lasts for 4.3 months. There’s greater than 10% chance of given day to be a wet during those days. On February 19, the chance of having a wet day peaks at 20%.

The drier season stretches from March 31 to November 22. It lasts for 7.8 months. There’s a 0% chance of having a wet day on July 2.
Among the wet days, distinguishing from experiencing rain alone, snow alone, or a combination of the two is important. Based on a categorization, rain alone is the most common form of precipitation throughout the year. On February 19, there’s a 20% chance of rain alone.


The rainfall accumulated over a sliding 31-day period centered around each day of the year is shown to know the variation within months and not the monthly totals. Placentia has a significant seasonal variation in its monthly rainfall.

The rainy period of the year in Placentia lasts around October 20 to April 23. For 6.1 months, there’s a sliding 31-day rainfall of at least 0.5 inches. The most rainfall during the 31 days centered around February 19. There was an average total accumulation of 3.1 inches.

The rainless period of the year in Placentia lasts for 5.9 months. This period stretches from April 24 to October 20. July 6 has the least rainfalls with an average total accumulation of 0.0 inches.


Over the course of the year, the length of the day in Placentia varies significantly. In 2018, December 21 is the shortest day of the year. That day has 9 hours, 54 minutes of daylight. June 21 is the longest day in 2018 with 14 hours, 25 minutes of daylight.

On June 13 happens the earliest sunrise at 5.40am. The latest sunrise is an hour and 33 minutes later than 7:12 am on November 3. On December 4 happens the earliest sunset at 4:42 pm. The latest sunset occurs 3 hours and 24 minutes later at 8:06 PM on June 29.

In Placentia, Daylight Saving Time (DST) is observed during 2018. It starts in the spring on March 11 and lasts for 7.8 months. The DST ends in the fall on November 4.


The humidity comfort level is based on the dew point. And, the dew point determines whether perspiration will evaporate from the skin and cools the body. Remember that the lower the dew points, the drier the feeling. The higher the dew points, the more humid it feels. Unlike temperature that typically varies significantly between day and night, dew points tend to vary more slowly. This factor means that while temperature may drop at night, a muggy day is most likely followed by a muggy night.

The perceived humidity level in Placentia, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 4% of 4% throughout.


In this section, know about the wide-area hourly average wind vector (direction and speed) at 10 meters above the ground. The wind that’s experienced at any given location is highly dependent on local topography and other factors. Its direction and instantaneous wind speed vary more widely than the hourly average.

Placentia experiences mild seasonal variation with their average hourly wind speed over the course of the year.
The windier part of the year starts from November 10 to May 8. This situation lasts for 5.9 months. December 31 is the windiest day of the year since it’s average hourly wind speed is 7.8 miles per hour.

The calmer time of the year is from May 8 to November 10. This situation lasts for 6.1 months. September 5 is the calmest day of the year since it’s average hourly wind speed is 5.1 miles per hour.

In Placentia, the predominant average hourly wind direction varies throughout the year.



The wind is often from the west for 9.2 months. This wind direction lasts from February 8 to November 13, and there’s a peak percentage of 55% on May 22

For 2.8 months, the wind most often comes from the east. This situation happens from November 13 to February 8 and has a peak percentage of 35% on January 1.

Now that you have an idea of Placentia weather, you may now start deciding which time of the year you’d want to visit Placentia.