マートルビーチ 5月の天気
マートルビーチの5月:暖かい、雨が多い — 一年で最も訪れやすい月のひとつ。
2026年9月更新 · ERA5再解析による気候平年値
マートルビーチでは12か月中1位 · 5月に訪れたい旅行先で1413か所中335位 · 快適スコア87/100(Aランク)
- 日中
- 26°C
- 夜
- 18°C
- 雨の日
- 8
- 日照
- 10.8 h
- 湿度
- 75%
- 日の長さ
- 14 h

5月のマートルビーチについての旅行者の声
Myrtle Beach's forum calls May a favorite — warm without being oppressive, average highs in the low 80s°F, good for spending the day outside. Regulars note the ocean itself stays on the cool side through most of the month, warming up enough for comfortable swimming right around Memorial Day, and that evening breezes off the water can be genuinely refreshing enough for a light jacket.
マートルビーチのほかの月
Regulars are specific this month is a real transition, highs falling from near 80F early on to around 70F by the end, with the ocean itself cooling noticeably faster after the second week - early October named as the better window for anyone actually planning to swim. Our row backs that mild, still-pleasant read, 24.6C over 15.3C nights, with 110.9mm of rain across 6.1 days and humidity at 74 percent. Regulars are consistent this counts as genuinely perfect weather for strolling the beach even once swimsuit weather fades, crowds thinning fast and hotel deals improving as the month goes on. The sea sits at 21.8C, still comfortable for many earlier in the month. The record: 8.9 hours of sun, a 17 kph wind and AQI 42.
Regulars put the average air near 76F with water around 68F, both still on the cool side, and warn the month can swing day to day - 75 one afternoon, 55 the next. Our row backs that unsettled read, 22.5C reading as 22C over 12.9C nights, with 87.4mm of rain across 6.6 days and a genuine 20.2 kph wind. The sea sits at 19.5C, manageable for some by late April rather than truly warm, which is why regulars traveling with kids over spring break are pointed toward a hotel with a heated indoor pool as the reliable backup regardless of what the ocean is doing that day. Days are usually clear and sunny even when the water lags behind. The record: humidity 70 percent, 10.7 hours of sun and AQI 51.
Myrtle Beach-forum threads on January weather describe genuinely variable conditions - typical days sitting in the 50s Fahrenheit, but posters note it's entirely possible to catch a run of 70-degree afternoons on the warmest stretches, right alongside a cold snap on other days. Mornings run chilly regardless, but the afternoon warmth is often enough for a comfortable beach walk, outdoor dining, or a round of golf with just a light jacket. The ocean itself is called firmly off-limits for swimming, water temperatures cold enough that even wading isn't appealing. Regulars are consistent that the real trade-off this month isn't the weather but the town itself - a genuine share of restaurants and attractions close for the off-season, so the notably cheaper rates come paired with fewer open options compared to summer. The record: 13.7C days feeling like 12C, 4C nights, 82mm across 8.1 days, 2.4cm of rare snowfall, a 10.9C sea, 72 percent humidity and 7.2 hours of sun.
September is the month locals name alongside May: about 85F air and 77F water on their figures - our row says 28.5C and a 27.2C sea - with the crowds gone the moment Labor Day passes, no queues at the restaurants or the mini-golf, and accommodation prices down with them. The caveat is the calendar it shares with hurricane season, of which September is the peak. Regulars are measured about it: storms more often skirt the South Carolina coast for North Carolina, and one of them counts nine September trips with a single tropical storm that was not severe. Our row's 210mm across 8 precipitation days is the wettest total in this round, and that is what a tropical system looks like in a monthly normal. The record: 20.8C nights, humidity 79 percent and 9.8 hours of sun.
地図のマートルビーチのカードから自分のメモを追加できます。
マートルビーチの気候平年値 — 5月
ERA5再解析による月平均値です。AQIはその月の平均US AQI(米国大気質指数)です。
5月のマートルビーチの混雑
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Spring Bike Week、Memorial Day weekend(推定)
ピークの混雑混雑ショルダーシーズン閑散
マートルビーチの天気が良い月
この旅行先自身の一年間の快適スコアでランキングしています — 混み具合とは別のものです(上の「混雑」を参照)。
天気が最高マートルビーチの天気が最も良いのは5月、6月、9月です — ひと続きのシーズンではなく、別々の時期です。
5月にはLoggerhead nestingがあります。
天気が最高天気はまずまず天気が厳しい
5月のマートルビーチのイベント
毎年の季節のイベント、自然の見どころ、休業、祝日 — 厳選し出典を明記しています。
- 自然
Loggerhead nesting
5月1日〜10月31日ウミガメの産卵Loggerheads nest along the Grand Strand from May to October, and the beachfront hotels run shielded lighting for the whole season. Volunteers walk the sand at dawn before the umbrellas go up.
- 祭り
Spring Bike Week
5月8日〜17日モータースポーツの週末混雑休業Ten days of motorcycle rallies in mid-May, centred on the south end and Murrells Inlet, with a second, smaller rally in the fall. Ocean Boulevard is a slow parade of engines from lunchtime. 出典 ↗
- 祝日
Memorial Day weekend
5月23日〜25日国民の祝日混雑早めの予約をMemorial Day, the last Monday of May, opens the summer travel season: over the long weekend campsites and lodging book out, roads are slow, and parking at the most popular spots fills early in the day. 出典 ↗
近くで開催中のイベント
マートルビーチから300 km以内 — 日帰りやちょっとした移動で行けて、今月何かがある場所です。快適スコアには含まれません。
マートルビーチはどこにある?
5月のマートルビーチ — よくある質問
- 5月はマートルビーチを訪れるのに良い時期ですか?
- マートルビーチの5月:暖かい、雨が多い — 一年で最も訪れやすい月のひとつ。SeasonMapの快適スコアでは、マートルビーチの12か月中1位です(87/100)。
- 5月のマートルビーチはどんな天気ですか?
- 5月のマートルビーチは、平均最高気温26.4°C、最低気温18°C、降水量は約110.7 mmで、雨の日はおよそ7.8日です。
- 5月のマートルビーチの大気質はどうですか?
- 5月のマートルビーチの米国大気質指数(US AQI)は、平均約51です。
300 km圏内:CharlestonのSpoleto Festival USA(5月22日〜6月7日)、Hilton Head IslandのLoggerhead nesting(5月1日〜10月31日)。