Cool
Average highs are around -1°C, so pack for cooler days.
September verdict
Port Lockroy, Antarctica in September
Weather score9Poor
Poor for holiday weather
Average highs are around -1°C, so pack for cooler days. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 210mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
-1°C
Rain
210mm
Sun
0h
Sea
-1°C
Weather score
9
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 210mm, so showers are a real planning factor.
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
September-1°C average high
September is on the cooler side of Port Lockroy's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to April and November to December
This stretch sets the upper range for average daytime heat.
Rain
September210mm average rain
September is one of Port Lockroy's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to February, June, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September0 hours average sun
September 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
September-1°C average sea
September 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
September9 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary and November to December
These months have the strongest weather score in the monthly averages.