
Private Tour Sintra from Lisbon Palaces of Pena and Regaleira
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Sintra, Portugal
Weather month by month, from 20 years of weather-station records.
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 15°C / 9°C | 105 mm · 8 days | Fair |
| February | 16°C / 9°C | 92 mm · 7 days | Fair |
| March | 18°C / 11°C | 92 mm · 7 days | Fair |
| April | 20°C / 13°C | 76 mm · 7 days | Great |
| May | 23°C / 15°C | 44 mm · 4 days | Great |
| June | 26°C / 17°C | 18 mm · 2 days | Great |
| July | 28°C / 18°C | 1 mm · 0 days | Good |
| August | 29°C / 19°C | 5 mm · 0 days | Good |
| September | 27°C / 18°C | 35 mm · 3 days | Great |
| October | 23°C / 16°C | 114 mm · 7 days | Great |
| November | 18°C / 12°C | 135 mm · 8 days | Fair |
| December | 15°C / 10°C | 103 mm · 7 days | Fair |
Spring (April-June) is arguably the best time to visit. The gardens are in spectacular bloom, temperatures are mild (15-22°C), and the famous mist adds atmosphere without being oppressive.
Summer (July-August) brings warm, dry weather (up to 25-28°C in the town, cooler in the hills) but also the largest crowds. The palaces are packed, and queues are at their longest.
Autumn (September-October) offers a second peak season with pleasant temperatures, thinning crowds, and the forests turning beautiful shades of gold and red.
Winter (November-March) is cool (8-15°C), damp, and often shrouded in thick mist, creating an intensely moody and atmospheric experience with very few tourists.
In January, Sintra averages highs of 15°C and lows of 9°C, with about 8 rainy days and 105 mm of rain. Expect mixed weather, with comfortable spells.
In February, Sintra averages highs of 16°C and lows of 9°C, with about 7 rainy days and 92 mm of rain. Expect mixed weather, with comfortable spells.
In March, Sintra averages highs of 18°C and lows of 11°C, with about 7 rainy days and 92 mm of rain. Expect mixed weather, with comfortable spells.
In April, Sintra averages highs of 20°C and lows of 13°C, with about 7 rainy days and 76 mm of rain. It is one of the most comfortable months for sightseeing.
In May, Sintra averages highs of 23°C and lows of 15°C, with about 4 rainy days and 44 mm of rain. It is one of the most comfortable months for sightseeing.
In June, Sintra averages highs of 26°C and lows of 17°C, with about 2 rainy days and 18 mm of rain. It is one of the most comfortable months for sightseeing.
In July, Sintra averages highs of 28°C and lows of 18°C, with about 0 rainy days and 1 mm of rain. It is a good month to visit.
In August, Sintra averages highs of 29°C and lows of 19°C, with about 0 rainy days and 5 mm of rain. It is a good month to visit.
In September, Sintra averages highs of 27°C and lows of 18°C, with about 3 rainy days and 35 mm of rain. It is one of the most comfortable months for sightseeing.
In October, Sintra averages highs of 23°C and lows of 16°C, with about 7 rainy days and 114 mm of rain. It is one of the most comfortable months for sightseeing.
In November, Sintra averages highs of 18°C and lows of 12°C, with about 8 rainy days and 135 mm of rain. Expect mixed weather, with comfortable spells.
In December, Sintra averages highs of 15°C and lows of 10°C, with about 7 rainy days and 103 mm of rain. Expect mixed weather, with comfortable spells.
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May is the most comfortable month on average, with highs of 23°C. June and September are close behind.
November is the wettest month, with about 135 mm of rain.
August is the warmest month, with average highs of 29°C and lows of 19°C. The coldest nights come in January, averaging 9°C.
Averages for 2006–2025 from the LISBOA GEOFISICA weather station (23 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.