Cool
Average highs are around -1°C, so pack for cooler days.
Weather Guide
Port Lockroy, Antarctica Average Monthly Weather
Weather score18Poor annual avg
Best months: December, January, November
Across the year, average daytime temperatures are around 1°C, sunshine averages 0h per day, and rainfall totals about 2059mm. Sea temperatures average -1°C across the year.
Annual weather
Annual averages
Temp
1°C
Rain
2059mm
Annual total
Sun
0h
Sea
-1°C
Weather score
18
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 163mm, so some wet days are possible.
Limited sun
Sunshine averages 0h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average -1°C, so the water can feel cool.
Map
Weather map
Compare Port Lockroy, Antarctica with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July-1°C average high
July has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJanuary to April and November to December
This stretch sets the upper range for average daytime heat.
Rain
July163mm average rain
July sits near Port Lockroy's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February, June, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July0 hours average sun
July is close to Port Lockroy's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
July-1°C average sea
July is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to May and December
Sea temperatures are usually near 0°C in this stretch, so swimming comfort is at its strongest.
Weather score
July14 weather score
July scores below Port Lockroy's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary and November to December
These months have the strongest weather score in the monthly averages.