Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
Weather Guide
Guadalcanal, Solomon Islands Average Monthly Weather
Weather score61Good annual avg
Best months: June, August, September
Across the year, average daytime temperatures are around 30°C, sunshine averages 5.6h per day, and rainfall totals about 2476mm. Sea temperatures average 29°C across the year.
Annual weather
Annual averages
Temp
30°C
Rain
2476mm
Annual total
Sun
5.6h
Sea
29°C
Weather score
61
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 147mm, so some wet days are possible.
Limited sun
Sunshine averages 4.8h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 29°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Guadalcanal, Solomon Islands with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July29°C average high
July is close to Guadalcanal's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
July147mm average rain
July sits on the drier side of Guadalcanal's year, which helps with sightseeing and transfers.
Driest monthsMay to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July4.8 hours average sun
July is close to Guadalcanal's usual sunshine level, with limited seasonal swing across the year.
Brightest monthsJanuary, March to June, and August to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July29°C average sea
July is part of a consistently warm sea-temperature pattern, so swimming comfort changes little through the year.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
July66 weather score
July scores above Guadalcanal's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsMay to November
These months have the strongest weather score in the monthly averages.