イズミル 4月の天気
イズミルの4月:快適、ときどき雨 — 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
イズミルでは12か月中2位 · 4月に訪れたい旅行先で1413か所中98位 · 快適スコア92/100(Sランク)
- 日中
- 22°C
- 夜
- 12°C
- 雨の日
- 8
- 日照
- 11.2 h
- 湿度
- 68%
- 日の長さ
- 13 h

4月のイズミルについての旅行者の声
Forum posters call April genuinely transitional for the Aegean coast - conditions can turn already warm or even hot on a clear day (enough to get sunburned), but rain is always a real possibility too, and evenings stay noticeably chilly regardless. The sea and any outdoor pools stay cold enough that swimming isn't really on, and most beach-town nightlife doesn't properly get going until May. One regional comparison worth knowing: the Mediterranean coast around Antalya runs consistently warmer than the Aegean (Izmir included) at the same time of year. The standard packing advice given the swings: an umbrella plus shoes that work for both dry, warm afternoons and wet mornings.
イズミルのほかの月
Regulars are specific that summer along this stretch of the Aegean coast effectively starts now and runs through mid-September, normal daytime temperatures already in the 30-35C range with some of the hottest days of the whole season capable of landing this early rather than waiting for peak summer. Our row backs that hot, genuinely dry read, 31.4C reading as a hot 33C, over 21.1C nights, with rain minimal at 33.1mm across 5.9 days and humidity down to 56 percent. Regulars are consistent nearby coastal towns along the Cesme peninsula offer a cooler escape from the city heat, with water temperature varying noticeably by beach depending on undersea conditions. The sea sits at a warm, swimmable 23.2C. The record: 13.4 hours of sun, a 14.8 kph wind and AQI 61.
Regulars place March at the tail of a rainy stretch that runs from November, so while the sun is out more often than not on this coast, a day of steady rain or even a short storm is still a real possibility rather than a surprise. Our row backs that transitional read, 17.6C reading as 16C over 8.5C nights feeling 6C, with 79.4mm across 9.2 days. Snow can still sit on the inland mountains even as the coast itself has moved past winter, and evenings stay properly cold - layers, an umbrella, and shoes that can handle both dry pavement and a sudden shower. This is spring rather than beach weather, good for sightseeing but not yet for the sea, which sits at 14.7C. The record: humidity 74 percent, 9.8 hours of sun, a 14.3 kph wind and AQI 58.
Turkey-forum threads asking if the country runs warm in January (Izmir specifically among the coastal cities discussed) are direct that winter along the Aegean is mild only by comparison to the interior, not genuinely warm - posters describe conditions as windy, rainy and properly cold rather than a sunny escape. One traveler planning fifteen days here was warned to expect the real possibility of solid rain and wind for the entire stay, a worst-case regulars say does happen some years. Daylight itself is limited, effectively over by 4pm. The upside: January's quiet, crowd-free version of the city and its waterfront promenade suits anyone prioritizing peaceful sightseeing over decent weather. The sea is called far too cold for swimming regardless of how mild a given afternoon feels. The record: 12.7C days feeling like 10C, 5.8C nights, a notably high 146mm across 11.9 days, 4.3cm of fresh snowfall, a 14.6C sea, 81 percent humidity and 7.1 hours of sun.
September is the month regulars name for the Turkish Aegean, and the reason is the water: sea temperatures peak in September and October, which our row puts at 25C while the air has come off its August high to 29.8C. Their arc is 30C or more at the start of the month falling to 25 to 30 by the end, and they warn that without a breeze it still feels hot. The qualification is timing inside the month. The Izmir-area resorts can be blustery even when warm, and late September into early October turns noticeably cooler and more unsettled here than further south, so the first half is the safer half. The record: 20C nights, 2.6 precipitation days carrying 18.6mm, humidity 56 percent and 11.3 hours of sun.
地図のイズミルのカードから自分のメモを追加できます。
イズミルの気候平年値 — 4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。
4月のイズミルの混雑
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Izmir Marathon、Alacati Herb Festival、主な訪問国のうち3か国で学校休暇(推定)
ピークの混雑混雑ショルダーシーズン閑散
イズミルの天気が良い月
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)。
天気が最高イズミルの天気が最も良いのは4月、5月、10月です — ひと続きのシーズンではなく、別々の時期です。
4月にはIzmir Marathonがあります。
天気が最高天気はまずまず天気が厳しい
4月のイズミルのイベント
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。
- 祭り
Izmir Marathon
4月5日〜20日 · 例年スポーツイベント混雑休業A World Athletics label road race through the city each April, with the coastal course closing roads along the bay on race morning. 出典 ↗
- 祭り
Alacati Herb Festival
4月20日〜26日食と酒のフェスティバル混雑Wild-herb dishes, foraging walks and stalls fill Alacati for about a week each spring; it's in Cesme district, roughly 90 minutes from central Izmir by road, so plan it as a day trip. 出典 ↗
近くで開催中のイベント
イズミルから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。
イズミルはどこにある?
4月のイズミル — よくある質問
- 4月はイズミルを訪れるのに良い時期ですか?
- イズミルの4月:快適、ときどき雨 — 一年で最も訪れやすい月のひとつ。SeasonMapの快適スコアでは、イズミルの12か月中2位です(92/100)。
- 4月のイズミルはどんな天気ですか?
- 4月のイズミルは、平均最高気温22.1°C、最低気温11.6°C、降水量は約53.5 mmで、雨の日はおよそ7.7日です。
- 4月のイズミルの大気質はどうですか?
- 4月のイズミルの米国大気質指数(US AQI)は、平均約52です。
300 km圏内:SelçukのStorks on the aqueduct(3月15日〜8月31日ごろ)、ÇeşmeのAlacati Herb Festival(4月20日〜26日)。