Pismo Beach (CA) Temperature by Month
The average annual maximum temperature in Pismo Beach, California, United States of America is 21°C (70°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Pismo Beach compares to cities worldwide.
Pismo Beach Monthly Temperatures
The temperature in Pismo Beach changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a moderate 18°C (64°F) in December to a comfortable 24°C (75°F) in September. Nighttime lows range from 13°C (55°F) in September to 6°C (43°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Pismo Beach by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. September, the warmest month, averages 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Pismo Beach vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Pismo Beach vs World: Temperature Compared
Pismo Beach's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Pismo Beach's weather — including monthly rainfall, sunshine hours, and humidity — visit our Pismo Beach climate page.
