Cool
Average highs are around 18°C, so pack for cooler days.
December verdict
Mixed for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 7.2h per day, enough for a balanced month. Rainfall averages 41mm, which is relatively low for holiday planning.
Monthly averages
Temp
18°C
Rain
41mm
Sun
7.2h
Sea
18°C
Weather score
50
Mixed
Cool
Average highs are around 18°C, so pack for cooler days.
Drier
Rainfall averages 41mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Compare Guadalupe Island, Mexico with nearby places by weather score, rain, sun, temperature, and swim conditions.
December18°C average high
December is on the cooler side of Guadalupe Island's year, useful if you prefer less intense daytime heat.
Warmest monthsJuly to October
This stretch sets the upper range for average daytime heat.
December41mm average rain
December is close to Guadalupe Island's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
December7.2 hours average sun
December is one of Guadalupe Island's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMarch to April and July
This stretch has the strongest sunshine in the monthly averages.
December18°C average sea
December is below Guadalupe Island's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaAugust to October
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
December50 weather score
December scores below Guadalupe Island's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to October
These months have the strongest weather score in the monthly averages.