Mild
Average highs are around 23°C, so days are mild rather than hot.
Weather Guide
Fairfield, California, United States Average Monthly Weather
Weather score49Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 20°C, sunshine averages 8.7h per day, and rainfall totals about 675mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
20°C
Rain
675mm
Annual total
Sun
8.7h
Sea
13°C
Weather score
49
Mixed avg
Seasonal climate calendar
Trip feel
Drier
Rainfall averages 39mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.2h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare Fairfield, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October23°C average high
October sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
October39mm average rain
October sits on the drier side of Fairfield's year, which helps with sightseeing and transfers.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October8.2 hours average sun
October sits close to Fairfield's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
October14°C average sea
October sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to October
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
October55 weather score
October sits close to Fairfield's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsMay to September
These months have the strongest weather score in the monthly averages.
