シントラの月別の天気
シントラを訪れるベストシーズンは6月〜8月です — 8月は95/100、最高24°C、雨の日0日。 ベストな季節は夏（6月〜8月）で、平均94/100です。
最も不向きな月は12月で、74/100です — 涼しい、ときどき雨、空気がきれい。 12月を見る →
2026年9月更新 · ERA5再解析による気候平年値
周辺も含めて旅を計画するなら ポルトガル旅行のベストシーズン →
シントラSintra, Portugal🇵🇹 ポルトガル · リスボン・ポルトガル中部 · 都市95
ベストな季節：6月〜8月（平均94/100） · 最も不向きなのは12月（74/100）
- 日中
- 24°C
- 夜
- 18°C
- 雨の日
- 0
- 日照
- 12.2 h
- 湿度
- 81%
- 日の長さ
- 14 h
シントラの月ごとのようす
シントラに最も合う旅のタイプでの100点満点の快適スコア、気候平年値による平均最高気温・雨の日数・1日の日照時間、そして混雑具合の目安です。
シントラの年間イベント
祭り、自然の見どころ、祝日、そして注意したい季節 — 厳選し出典を明記しています。詳しくは各月のページで。
8月のシントラの混雑
その場所自体の混み具合 — 学校休暇や大型連休、編集部がタグ付けした月、そして天気の良さによる人気の高さ。快適スコアには含まれません。
ピークの混雑Pena Palace timed entry、August day-trippers、ポルトガルのSummer holidays（推定）
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ピークの混雑混雑ショルダーシーズン閑散
シントラへ行く前に知っておきたいこと
旅行者自身の旅行記から、実際の体験を原文へのリンク付きで引用しています。
ビザ・入国
A guide to Pena Palace in Sintra is direct about the risk of skipping preparation: same-day tickets routinely sell out during spring, summer, and school holidays, so booking online in advance isn't optional if you want to guarantee entry. Their timing advice: buy tickets online and arrive 15-20 minutes before opening to be among the first inside, and budget at least 3 hours for the palace and gardens alone, more like 4-5 for the fuller experience including the surrounding park.
シントラの旅行者の声
実際に訪れた人たちの声です — 通年のメモを先に、そのあと月ごとに並べています。
Forum posters describe Sintra as its own microclimate distinct from nearby Lisbon - forecasts are notoriously unreliable here, with weather sites unable to reliably predict whether a given day brings fog, rain, or both. January can be genuinely rainy compared to Lisbon's own average, though a lucky day can still turn out nicely. Posters note days end early this time of year, with darkness settling in around 5:30pm, so plan sightseeing accordingly. Practical advice given the unpredictability: bring a proper rain jacket regardless of the morning forecast, since rain can arrive quickly without much warning, and expect some restaurants and smaller attractions to be closed or running on reduced winter hours.
Regulars are specific Sintra always runs cooler than nearby Lisbon, its own genuine microclimate a real factor to plan around even when the wider region turns hot and sunny. Our row backs that mild, genuinely dry read, 21.4C over 15.9C nights feeling 14C, with rain minimal at 9.7mm across 3.1 days and a real 24.4 kph wind. Regulars are consistent this month can still bring a genuine heat wave to the wider Central Portugal region even with Sintra itself staying comparatively mild, a light layer worth having for the cooler hilltop air regardless of how hot Lisbon feels that day. The sea sits at a cool 18.1C. The record: 12.9 hours of sun, humidity 79 percent and AQI 42.
Sintra's forum flags a genuine microclimate here — cooler and more humid than nearby Lisbon thanks to the surrounding mountains and Atlantic proximity, with a temperature gap of 5°C or more between the two despite being only 20km apart. Regulars are split on July: some skip it for the crowds, though the heat itself is rarely as intense as elsewhere in the region — evenings can turn a bit chilly and humid given the hilltop setting.
Sintra's own microclimate runs several degrees below Lisbon's, which is most of why people come up here in August - and it comes with a catch the forum documents: mist can sit on Pena Palace for hours, and one July visitor arriving at 10am found it had still not burned off by lunch, with the town below in clear sun. August crowds are the other constant, made worse on days when cruise ships are in Lisbon and running excursions up. The timing advice is to be at Pena for the 09:00 opening or to come after 15:00, once the morning tour groups have gone. The record: 23.7C days, 17.6C nights, 0.3 precipitation days, 12.2 hours of sun, a 16.1C Atlantic and a 25 kph wind.
地図のシントラのカードから自分のメモを追加できます。