Beach forecast for Hannan
Today, Thursday, October 29, 2026 · local time (GMT+9) · Osaka, Japan Today, Thu, Oct 29 · GMT+9- Swimming
- Calm · 0.4 ft
- Water
- 74 °F · nice
- Max UV
- 5 · SPF 30
- Low tide
- 2:19 am and 2:10 pm
Today, Thursday, October 29, it's a fair beach day in Hannan (6/10). The best hours are from 12:00 pm to 5:00 pm: sunshine, little wind, a calm sea, water at 74 °F and low tide at 2:10 pm, though with cool air. The best day this week is Tuesday, November 3, at 6/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 6Fair beach day | 12:00–5:00 pm | Calm · 0.4 ft | 74 °F | 5 |
| Fri 30 | 3Poor beach day | No good window | Calm · 1.8 ft | 74 °F | 3 |
| Sat 31 | 5Fair beach day | 12:00–4:00 pm7:00–9:00 am | Calm · 2.4 ft | 73 °F | 4 |
| Sun 1 | 2Not a beach day | No good window | Calm · 0.8 ft | 73 °F | 4 |
| Mon 2 | 2Not a beach day | No good window | Calm · 3.1 ft | 73 °F | 2 |
| Tue 3 | 6Fair beach day | 10:00 am–2:00 pm | Calm · 0.8 ft | 73 °F | — |
| Wed 4 | 2Not a beach day | No good window | Calm · 1.0 ft | 73 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
5 good hours- Mostly sunny
- Cross-shore breeze (6 mph)
- Calm for swimming: 0.4 ft waves
- UV 5 (moderate): SPF 30 sunscreen
- Water at 74 °F (nice)
- Low tide at 2:10 pm: more sand
Today, hour by hour
- Swimming Calm · 0.4 ft
0.4 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 74 °F
Nice for swimming.
- Sun & sunscreen UV 5 · SPF 30
Max UV 5 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 6 mph
Cross-shore breeze (6 mph).
- Tide & sand 2:10 pm
Low tide at 2:19 am and 2:10 pm: that's when there's the most sand. High tide at 8:56 am and 7:43 pm. Coefficient 98 (spring tides): little sand left at high tide.
The best window, 12:00 pm to 5:00 pm, brings sunshine, little wind, a calm sea, water at 74 °F and low tide at 2:10 pm, though with cool air.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority.
Today, hour by hour
| Time | Rating | Sky | Feels like | Wind | Waves | UV |
|---|---|---|---|---|---|---|
| 7:00 am | 0 | Clear sky | 46 °F | 4 mph | 0.7 ft | 0 |
| 8:00 am | 0 | Clear sky | 52 °F | 3 mph | 0.7 ft | 1 |
| 9:00 am | 2 | Clear sky | 58 °F | 1 mph | 0.6 ft | 2 |
| 10:00 am | 4 | Clear sky | 61 °F | 2 mph | 0.5 ft | 4 |
| 11:00 am | 4 | Mainly clear | 64 °F | 4 mph | 0.5 ft | 5 |
| 12:00 pm | 6 | Mainly clear | 66 °F | 6 mph | 0.4 ft | 5 |
| 1:00 pm | 6 | Mainly clear | 67 °F | 6 mph | 0.3 ft | 4 |
| 2:00 pm | 6 | Mainly clear | 67 °F | 4 mph | 0.3 ft | 3 |
| 3:00 pm | 6 | Mainly clear | 68 °F | 3 mph | 0.2 ft | 1 |
| 4:00 pm | 6 | Mainly clear | 67 °F | 2 mph | 0.2 ft | 0 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Hannan
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- 箱作海水浴場 2.9 mi · W
- Restrooms
- Parking
- りんくう南浜海水浴場 3.3 mi · N
- Parking
- 淡輪海水浴場 3.6 mi · W
- Restrooms
- Parking
- 泉南マーブルビーチ 3.8 mi · N
- Parking
- マーブルビーチ 5.4 mi · NE
- Restrooms
- Parking
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Hannan
Webcams provided by windy.com — add a webcam
How we rate a beach day
We rate every beach hour from 0 to 10 with simple, fixed rules:
- Adds: sunshine (up to 3 points, fewer with more clouds), warmth (up to 4, from the feels-like temperature; ideal between 81 °F and 91 °F), a calm sea (1), water at 70 °F or warmer (1; from 64 °F, half) and low or mid tide (1: more sand). Anything without data is left out and the rest is scaled to 10.
- Takes away: cold (feels-like below 64 °F, 1 to 4 points), rain (half a point if likely, up to 6 if it rains; thunderstorms, 8), wind from force 4, about 12 mph (1 to 6 points; half a point more if offshore, which blows inflatables out to sea, or onshore, which churns the water), waves (1 to swim with care, 4 if dangerous, 1 more for high rip current risk), very high UV (half a point; extreme, 1), water below 59 °F (1) and spring high tides (1: little sand left).
- Swimming: calm, use care (waves from 2.6 ft, or long swell) or dangerous (from 6.6 ft, or 4.9 ft with a long period), based on how much of the wave reaches this shore given the way it faces. In the U.S., today's and tomorrow's rip current risk comes from the National Weather Service surf zone forecast when it issues one; otherwise we estimate it from the waves.
- Best windows: runs of 2 to 5 hours rated 4 or more and close to the best hour, at least one hour apart.
- Day rating: the average of the best window; a 2-hour window keeps 85% of it and a 3-hour window 95%.
Today, in the best window: sun 2 of 3, warmth 1 of 4, calm sea 1 of 1, water 1 of 1 and tide 1 of 1.
It's a guide, not a guarantee: weather changes and every beach is different. Always follow the lifeguard's flags.
Questions about the beach in Hannan
Is it a beach day in Hannan today?
A fair beach day: 6/10. Best from 12:00 pm to 5:00 pm, with sunshine, little wind, a calm sea, water at 74 °F and low tide at 2:10 pm, though with cool air.
What are the swimming conditions in Hannan today?
0.4 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
How warm is the water in Hannan?
About 74 °F today: nice. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Hannan today?
UV reaches 5 (moderate): SPF 30 sunscreen, sunglasses and a hat.
When is low tide in Hannan?
Today low tide is at 2:19 am and 2:10 pm: that's when there's the most sand. High tide is at 8:56 am and 7:43 pm. Coefficient 98 (spring tides): little sand left at high tide.
What about tomorrow? Will it be a beach day in Hannan?
Tomorrow, Friday, October 30: a poor beach day (3/10).
What beaches are near Hannan?
箱作海水浴場 (2.9 mi), りんくう南浜海水浴場 (3.3 mi), 淡輪海水浴場 (3.6 mi), 泉南マーブルビーチ (3.8 mi) and マーブルビーチ (5.4 mi). See below for amenities and water quality.
Are there jellyfish or sargassum today?
We don't know: there's no open data on jellyfish, sargassum or closures for each beach. Ask the lifeguard, check the flags or the local beach authority's website.
How is the rating worked out?
From the hourly forecast: sun and clouds, feels-like temperature, rain, wind (and whether it blows onshore or offshore), waves and their period, UV, water temperature and, where there is one, the tide. Each factor adds or takes away a fixed number of points and the rating sums them up out of 10.
More about Hannan today
Learn more
Our own calculation, using the Open-Meteo forecast (ECMWF, NOAA GFS, Météo-France, Copernicus Marine and CAMS, CC BY 4.0), the tide from Tannowa (JMA) and the sun from astronomy-engine. Source: Japan Meteorological Agency website (出典：気象庁ホームページ), tide table (潮位表) for Tannowa (淡輪), https://www.data.jma.go.jp/kaiyou/db/tide/suisan/suisan.php?stn=TN. Public Data License (Version 1.0) (https://www.digital.go.jp/resources/open_data/public_data_license_v1.0), compatible with CC BY 4.0. Modified by TidePlanet (気象庁「潮位表」を加工して作成): harmonic constants fitted from the hourly prediction of 2025–2026; not an official JMA product.