Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Shimoda is from November. — some variation climate
🌧Rainy
| Score | 27 | 24 | 29 | 51 | 58 | 47 | 38 | 40 | 50 | 58 | 60 | 40 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Cool & rainy | Rainy | Rainy | Hot & rainy | Hot & rainy | Rainy | Rainy | Cool & rainy | Cold |
| Temperature | 6–11°C | 6–11°C | 9–14°C | 13–18°C | 16–21°C | 20–24°C | 24–28°C | 25–29°C | 23–27°C | 18–22°C | 14–18°C | 9–13°C |
| Feels like | 1–7°C | 1–8°C | 5–12°C | 10–17°C | 15–22°C | 21–26°C | 27–32°C | 29–34°C | 24–30°C | 16–22°C | 11–17°C | 4–10°C |
| Precipitation | 93mm 7 days | 126mm 9 days | 209mm 14 days | 240mm 13 days | 229mm 13 days | 355mm 17 days | 344mm 21 days | 208mm 19 days | 314mm 20 days | 222mm 14 days | 171mm 11 days | 98mm 7 days |
| Sunshine | 7.9h ☀︎ 78% | 8.0h ☀︎ 73% | 8.5h ☀︎ 71% | 8.4h ☀︎ 64% | 8.2h ☀︎ 59% | 6.5h ☀︎ 45% | 8.0h ☀︎ 56% | 10.6h ☀︎ 79% | 8.0h ☀︎ 65% | 7.6h ☀︎ 67% | 7.5h ☀︎ 72% | 7.7h ☀︎ 78% |
| Wind | NW · 32 km/h | NW · 30 km/h | N · 29 km/h | NW · 27 km/h | NW · 23 km/h | N · 23 km/h | W · 21 km/h | SW · 21 km/h | NE · 25 km/h | NE · 27 km/h | N · 27 km/h | NW · 31 km/h |
| Humidity (%) | 63% | 65% | 70% | 75% | 79% | 85% | 88% | 85% | 82% | 75% | 72% | 65% |
| Day length | 10.1h | 10.9h | 12.0h | 13.1h | 14.0h | 14.4h | 14.2h | 13.4h | 12.4h | 11.3h | 10.4h | 9.9h |
Held over a mid-May weekend, this festival commemorates Commodore Perry's 1854 arrival with a costumed parade, fireworks…
Through June, Shimoda Park's hillside trails bloom with thousands of hydrangeas, drawing local day-trippers during Japan…
Shimoda is famously remembered as the port that pried open feudal Japan, but modern visitors make the mistake of treating it solely as a summer beach escape; in truth, late autumn delivers the peninsula's clearest, most comfortable days just as the summer humidity breaks.
Tucked at the southern tip of the Izu Peninsula in Shizuoka Prefecture, Shimoda owes its place in the world to a geopolitical turning point. In the 1850s, as Japan buckled under mounting pressure to abandon over two centuries of national seclusion, Commodore Matthew Perry anchored his fleet in these sheltered waters, turning a sleepy harbor into the volatile stage for the nation's forced reopening. History lingers everywhere in the town's grid of sea-stone walls and coastal temples. Yet the modern rhythm of Shimoda is dictated by the Pacific Ocean. Most travelers envision this coast as an idyllic midsummer playground, but the weather tells a starkly different story: peak summer brings sweltering humidity and torrential downpours, while November delivers the crisp, crystalline coastal clarity that makes the town truly sing.
If you want Shimoda at its absolute finest, come in November. The suffocating warmth of the late subtropical summer has completely drained away, replaced by daytime highs around 18°C that feel brisk and invigorating against the skin. The Pacific horizon sharpens, shaking off the summer haze to reveal distant volcanic islands on the water and snow on inland peaks. While rainfall across the Izu Peninsula can be formidable earlier in the autumn, late fall sees the heavy downpours taper off into occasional, manageable showers that rarely derail an itinerary.
This is the premier season for walking. A stroll along Perry Road—flanked by willow trees, stone bridges, and historic namako-wall warehouses—feels effortless rather than taxing. You can hike up through Shimoda Park to the old lookout points without breaking a sweat, taking in the panoramic views of Shimoda Port where American steam frigates once dropped anchor. October shares a similar mildness with temperatures hovering in the low twenties, though it carries a slightly wetter punch. By November, visitor numbers swell significantly as domestic travelers arrive for the autumn foliage and mild coastal walking, but the weather easily justifies the bustle.
December produces a fascinating paradox: it is the most crowded month of the year in Shimoda, despite the weather turning markedly cold. As end-of-year travelers pour in from Tokyo to soak in coastal hot springs and ring in the new year near the sea, temperatures drop to daytime highs near 13°C, with biting ocean winds making the air feel closer to 10°C. January and February are even colder, with apparent temperatures hovering in single digits.
Winter on the southern Izu coast is largely dry and bright compared to the rest of the country, benefiting from generous daily sunshine. However, the icy sea gusts that rattle through the port can quickly numb exposed fingers. If you come during the winter months, your trip will be defined by indoor pleasures: long soaks in steaming onsen waters, steaming bowls of local seafood, and quiet visits to Ryosen-ji, the historic temple where negotiations between Perry and the Tokugawa shogunate unfolded. Expect town to feel packed and festive in late December, before settling into a hushed, sleepy low season through February.
Spring on the Izu Peninsula arrives early. March still carries a sharp morning chill and rapidly climbing rainfall, but by April the hillsides are lush and daytime conditions become delightfully mild. May pushes temperatures comfortably into the low twenties, creating an easy, barefoot warmth that heralds the coming beach season without its punishing humidity.
May is also when Shimoda fully embraces its past during the Black Ship Festival. Over a mid-May weekend, the town commemorates Perry's 1854 arrival with costumed parades, harbor fireworks, and joint performances by Japanese and American military bands. The harbor basin fills with energy, and the streets hum with a celebratory spirit that shows the community at its most animated. While spring storms do sweep through in heavy bursts, the bright interludes between rain systems make May the undisputed highlight of the first half of the year.
Conventional wisdom labels summer as prime time for a seaside town, but Shimoda's summer comes at a steep price. June ushers in the East Asian rainy season with unrelenting ferocity, unloading intense deluges that can flood coastal paths and disrupt travel plans. Yet June has one magnificent saving grace: the Shimoda Hydrangea Festival. Across the hillside paths of Shimoda Park, hundreds of thousands of hydrangeas burst into brilliant blues, purples, and pinks. The misty, overcast skies and steady drizzle provide the exact conditions these flowers thrive in, making quiet walks along the mossy trails atmospheric and richly rewarding, provided you pack serious rain gear.
July and August bring oppressive heat, where the air regularly feels like the mid-thirties and thick tropical humidity clings to everything. While sunseekers pack the white sands of Shirahama Beach to surf and swim under intense sunshine, sudden torrential downpours frequently roll off the mountains. September offers little relief, pairing sticky heat with the season's highest typhoon threat. Unless your sole objective is riding the surf at Shirahama Beach, the drenched, sweltering midsummer months demand far more endurance than late autumn ever will.