The Weather
300 Days of Sun!
Quarteira is a very sunny place and on average has 300 days of sun every year! The Algarve is also a near humid-free zone. In July and August it might get close to 40C, but next to no humidity.
Portuguese climate is a warm temperate, Mediterranean climate with a distinct wet season in the winter. November - Mid February are similar to Spain's temperatures, highs of 18C in the day down to 12C at night.
In the sweet spot of April through October, the sun is almost always shining and is incredibly consistent in the 20s/30s during the day and mid-teens in the evening.
https://weather-and-climate.com/average-monthly-Rainfall-Temperature-Sunshine,quarteira,Portugal