For those seeking warm weather, the ideal time to visit Sines is in June, July and September. During these months, temperatures typically soar to an average of 22.61 °C, and you'll find that August, July and June are the sunniest months, with an average of 188.94 hours of sunshine.
Conversely, if you favor cooler weather, consider planning your trip to Sines in January, February or March. During this period, you can expect an average temperature of 11.35 °C.
For travelers indifferent to temperature but keen to steer clear of rain, it’s wise to avoid visiting during June, July and August, when the average precipitation in Sines reaches 4.68 mm. Instead, consider the drier months of January, February and March, which feature significantly lower rainfall, averaging only 0 mm.