The north-west side of the main island, Viti Levu, tends to be slightly hotter, less humid and drier.
The south-east side gets more rain, which raises the humidity.
As a general rule, the main islands, Viti Luvu and Vanua Levu tend to have slightly higher rainfall that the smaller outlying islands. And the further north-west that you go the dryer (and hotter) the climate becomes.
However, that's not something you can rely on. It's quite possible for it to be pouring with rain in Nadi, while the south-east is dry.
Many people like to take their Fiji vacations during the winter months, when it's not quite so hot. Another reason for choosing this time, is the lower humidity and less rain. Average temperatures during these winter months are a daytime high of around 26°C with an overnight low of 19°C. The equivalent to a pleasant New Zealand summers day!
The trade winds come from this direction. This bring the rain clouds, which tend to drop their load once they make landfall. The main island of Viti Levu is broken into two by a mountain range that runs from top to bottom...this is the point at which the climate begins to change from wet to dry.
I have spoken to people born and bred in Suva, and they have commented how difficult it was to acclimatize to the hotter and dryer conditions experienced in the west. Personally, I find the wetter climate of the Suva side to be perfect. Even during the rainy season, most of the short heavy showers tend to be morning, late afternoon and night. So much of the day is rain free, and you can get out and about without getting wet. Though you will notice many of the locals do carry an umbrella at all times!
Even in the so called "wet season" you can get plenty of lovely hot days, with a refreshing downpour after dark. Some people will find the Fijian summer months just too hot and humid. if you can't take that sort of weather, then think about coming to Fiji during April-August. There is less rain, less humidity, and the temperature is just about perfect for everyone.
|Av Max °C||31.6||31.5||31.1||30.6||29.8||29.2||28.5||28.7||29.4||30.2||30.9||31.4|
|Av Min °C||22.7||23.0||22.6||21.7||20.1||19.3||18.3||18.4||19.3||20.4||21.5||22.1|
|Rain Days >0.1mm||18||18||19||12||7||6||5||5||6||9||11||13|
|Av Max °C||30.6||31.0||30.6||29.7||28.3||27.6||26.5||26.6||27.0||27.8||28.8||29.8|
|Av Min °C||23.6||23.8||23.5||23.1||21.9||21.4||20.4||20.5||20.9||21.7||22.5||23.2|
|Rain Days >0.1mm||23||22||23||22||20||18||18||17||20||19||19||21|