The weather in Mauritius in July/August can be quite variable with a micro-climate bringing some strong winds in certain areas across the island. Therefore, water visibility isn’t as clear as earlier in the year and temperatures are a bit cooler. Highs peak at around 23 degrees so this isn’t the best month for those looking for scorching temperatures. July is a very good time for surfing on the west coast of Mauritius though, and hiking can be great at this time so it can be ideal for people looking for a more adventurous holiday.
The temperatures in Reunion are slightly colder in July than earlier in the year, particularly in the Cirques, so plenty of layers are needed if you wish to hike the trails of Salazie, Cilaos or Mafate.