Today, 12 September, Saturday, in Atami (Japan): cloudy, light rain in places, moderately warm. During the day the air will warm up to +23°, at night around +19°. Wind up to 12 km/h. High chance of rain — be sure to take an umbrella or a raincoat. A T-shirt is comfortable during the day, but take a light sweater or windbreaker for the evening. The sea has warmed up to +25° — great for swimming. The sun will rise at 05:24 and set at 17:55 — daylight lasts 13 hours.
Hourly weather in Atami
2%15
0%16
0%17
2%18
5%19
10%20
14%21
16%22
18%23
20%00
21%01
22%02
25%03
33%04
42%05
47%06
41%07
31%08
25%09
27%10
34%11
43%12
55%13
70%14
💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).
Weather in Atami for 14 days
Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).
▶
Today 12.9
🌦️
💧 100%
+19°+23°
Morning
🌦️
+20°
Day
🌦️
+23°
Evening
🌇
+22°
Night
🌙
+19°
Light rain · precipitation 100% · wind up to 12 km/h. 🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
▶
Tomorrow 13.9
🌦️
💧 76%
+22°+25°
Morning
🌦️
+22°
Day
🌦️
+25°
Evening
🌇
+23°
Night
🌙
+22°
Drizzle · precipitation 76% · wind up to 8 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Mon 14.9
🌦️
💧 73%
+23°+29°
Morning
🌦️
+25°
Day
🌦️
+29°
Evening
🌇
+28°
Night
🌙
+23°
Drizzle · precipitation 73% · wind up to 14 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Tue 15.9
⛈️
💧 96%
+21°+24°
Morning
⛈️
+22°
Day
⛈️
+24°
Evening
🌇
+23°
Night
🌙
+21°
Thunderstorm · precipitation 96% · wind up to 14 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Wed 16.9
🌦️
💧 88%
+21°+24°
Morning
🌦️
+22°
Day
🌦️
+24°
Evening
🌇
+23°
Night
🌙
+21°
Drizzle · precipitation 88% · wind up to 13 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Thu 17.9
🌦️
💧 86%
+20°+24°
Morning
🌦️
+21°
Day
🌦️
+24°
Evening
🌇
+23°
Night
🌙
+20°
Drizzle · precipitation 86% · wind up to 20 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Fri 18.9
☁️
💧 22%
+20°+24°
Morning
☁️
+21°
Day
☁️
+24°
Evening
🌇
+23°
Night
🌙
+20°
Overcast · precipitation 22% · wind up to 23 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Sat 19.9
☁️
💧 44%
+22°+26°
Morning
☁️
+23°
Day
☁️
+26°
Evening
🌇
+25°
Night
🌙
+22°
Overcast · precipitation 44% · wind up to 17 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Sun 20.9
☁️
💧 65%
+21°+26°
Morning
☁️
+23°
Day
☁️
+26°
Evening
🌇
+25°
Night
🌙
+21°
Overcast · precipitation 65% · wind up to 7 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Mon 21.9
🌦️
💧 76%
+20°+27°
Morning
🌦️
+23°
Day
🌦️
+27°
Evening
🌇
+25°
Night
🌙
+20°
Drizzle · precipitation 76% · wind up to 12 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Tue 22.9
🌦️
💧 57%
+22°+27°
Morning
🌦️
+24°
Day
🌦️
+27°
Evening
🌇
+26°
Night
🌙
+22°
Rain showers · precipitation 57% · wind up to 23 km/h. 😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
▶
Wed 23.9
🌦️
💧 60%
+19°+22°
Morning
🌦️
+20°
Day
🌦️
+22°
Evening
🌇
+21°
Night
🌙
+19°
Rain showers · precipitation 60% · wind up to 14 km/h. 🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
▶
Thu 24.9
⛈️
💧 60%
+18°+20°
Morning
⛈️
+19°
Day
⛈️
+20°
Evening
🌇
+20°
Night
🌙
+18°
Thunderstorm · precipitation 60% · wind up to 11 km/h. 🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
▶
Fri 25.9
🌦️
💧 44%
+18°+23°
Morning
🌦️
+20°
Day
🌦️
+23°
Evening
🌇
+22°
Night
🌙
+18°
Rain showers · precipitation 44% · wind up to 17 km/h. 🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
🗺️ Precipitation radar
Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.
Rain intensity:lightmoderateheavy
🎯 What to do in this weather — indices of the day
Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.
🏖️ Beach
0 / 100
for sea and sun · Bad
🏊 Swimming
0 / 100
water 25° · Bad
🏃 Running
0 / 100
comfort for running · Bad
🧴 UV
9%
moderate · low
☂️ Rain
100%
likely · high
✨ Stars
18 / 100
evening visibility · Bad
🧺 Laundry drying
0 / 100
will dry outside · Bad
🚗 Car wash
0 / 100
better to wait · Bad
🌫️ Air quality
37
Good air
European AQI
PM2.5: 13PM10: 14O₃: 91NO₂: 19
The air is clean — you can walk and exercise outside.
🌅 Sun, moon and sea
Sunrise
05:24
Sunset
17:55
Golden hour
17:22
Daylight
13 h (-2 min vs yesterday)
Sea temperature
+25°
Atami climate by month
Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.
+7°
+1°
Jan
+8°
+1°
Feb
+11°
+4°
Mar
+15°
+8°
Apr
+19°
+13°
May
+22°
+17°
Jun
+26°
+21°
Jul
+27°
+22°
Aug
+24°
+19°
Sep
+19°
+14°
Oct
+14°
+9°
Nov
+10°
+4°
Dec
swipe sideways →
Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit
Month
Day
Night
Sea
Precipitation
What to pack and what makes the month notable (events, nuances)
January
+7°
+1°
+16°
92 mm
A cold month: +7° by day, long walks get uncomfortable. One of the wettest months (92 mm): downpours can derail plans. 🧣 a warmer jacket. The water is cold (+16°) — swimming is for the brave. This is the coldest month of the year.
February
+8°
+1°
+16°
106 mm
Cold: +8° by day, down to +1° at night — dress warmly. It's a rainy month (106 mm) — an umbrella is a must. 🧣 a warmer jacket. The water is cold (+16°) — swimming is for the brave.
March
+11°
+4°
+16°
180 mm
A fresh month — +11° daytime, take a jacket for walks. Frequent rain (180 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+16°) — swimming is for the brave.
April
+15°
+8°
+17°
170 mm
Cool weather: +15° by day, noticeably colder in the evening. One of the wettest months (170 mm): downpours can derail plans. 🧥 a warm jacket. The water is cold (+17°) — swimming is for the brave.
May
+19°
+13°
+19°
186 mm
One of the best times to visit: +19° by day, fresh nights. It's a rainy month (186 mm) — an umbrella is a must. 🙂 a sweater for the evening. Sea at +19° — swimmable, refreshing.
June
+22°
+17°
+22°
253 mm
Ideal weather: +22° daytime — neither hot nor cold. Frequent rain (253 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. Water at +22° — great for swimming. Statistically the wettest month of the year.
July
+26°
+21°
+25°
232 mm
The most pleasant season: +26° by day, comfortable all day long. One of the wettest months (232 mm): downpours can derail plans. 😊 light summer clothing. Water at +25° — great for swimming. Weather-wise, one of the three best months to visit.
August
+27°
+22°
+27°
154 mm
Warm and comfortable: +27° by day, +22° at night. It's a rainy month (154 mm) — an umbrella is a must. 😊 light summer clothing. Water at +27° — great for swimming. This is the hottest month of the year in Atami.
September
+24°
+19°
+26°
239 mm
Ideal weather: +24° daytime — neither hot nor cold. Frequent rain (239 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. Water at +26° — great for swimming.
October
+19°
+14°
+24°
248 mm
The most pleasant season: +19° by day, comfortable all day long. One of the wettest months (248 mm): downpours can derail plans. 🙂 a sweater for the evening. Water at +24° — great for swimming.
November
+14°
+9°
+21°
134 mm
Cool: around +14° by day, you'll need a warm layer. It's a rainy month (134 mm) — an umbrella is a must. 🧥 a warm jacket. Sea at +21° — swimmable, refreshing.
December
+10°
+4°
+18°
83 mm
Winter weather: about +10° daytime, you need a warm coat and hat. Frequent rain (83 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. Sea at +18° — swimmable, refreshing. The shortest daylight of the year — it gets dark early.
When to visit Atami
✅ Recommended time to visit
🌟 Best time: January, July, August
Daytime air+7…+27°
Sea temperature+16…+27°
Precipitationoften
Why: comfortable +7…+27° by day, little rain.
⚠️ Doable, with caveats
🌤️ Shoulder season: February, March, April, May, June, September
Daytime air+8…+24°
Sea temperature+16…+26°
Precipitationoften
Why: noticeable rain risk (106–253 mm/month) — pack an umbrella and backup plans.
🔴 Not the best time
❄️ Cold season: October, November, December
Daytime air+10…+19°
Sea temperature+18…+24°
Precipitationoften
Why: cold and dark (+10…+19° by day, 10 h of daylight) — only if frost and short days don’t put you off.
Bottom line: the best time to visit Atami is January, July, August, and the most comfortable months are January, July, August. The toughest months to visit are October, November, December: frequent rain.
🌡️ Today vs the climate normal
Today's high
+23°
Normal for September
+24°
Deviation
1° colder than normal
A year ago on this day
+26°
Record for this date
+31° (2024)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Atami
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.