Samoa has year-round mosquito activity, with peak risk during the warm, wet season from November through April. Both Upolu and Savaii carry similar risk, with the populated coastal lowlands being the primary areas of exposure.
Dengue fever is the primary concern, with moderate activity and periodic outbreaks. Zika has also caused outbreaks. Lymphatic filariasis is present. Samoa has no malaria transmission.
Aedes aegypti and Aedes polynesiensis are the primary vectors. The tropical Pacific climate with abundant rainfall supports year-round mosquito breeding.
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Explore mosquito risk briefings for other destinations in Oceania.
Disease presence data is sourced from WHO, CDC, ECDC, and OpenDengue. This is not medical advice — consult a travel health professional before your trip.