Castaway Island Temperature by Month
Castaway Island in Mamanuca Islands, Fiji enjoys a stable climate, with daytime temperatures staying close to 28°C (82°F) throughout the year. Explore the full monthly breakdown below.
Castaway Island Monthly Temperatures
With little seasonal fluctuation, Castaway Island offers a predictable and steady climate. Maximum daytime temperatures reach a comfortable 30°C (86°F) in February and a comfortable 27°C (81°F) in August. At night, lows range from 26°C (79°F) to 23°C (73°F) throughout the year.
The chart below illustrates the average maximum day and minimum night temperatures in Castaway Island by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. February, the warmest month, averages 184 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Castaway Island vs Fiji
The map below shows the annual temperature across Fiji. You can also select individual months if you want to compare a specific time of year.
very warm
warm
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moderate
cold
very cold
Castaway Island vs World: Temperature Compared
Castaway Island's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Castaway Island?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Castaway Island, August is the coolest month, with average highs of 27°C (81°F) and humidity around 76% — considered high. In February, the warmest month, temperatures average 30°C (86°F) with 83% humidity — conditions that feel very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Castaway Island this rarely lasts long on the ground.
For more on Castaway Island's weather — including monthly rainfall, sunshine hours, and humidity — visit our Castaway Island climate page.
