Taking the local weather in Isabela into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually August and July, with an average temperature of 27°C, while the coldest months are March and February, with an average of 25°C. The rainiest months in Isabela are May, September, October and November, with each month seeing an average of 195 mm of rainfall.