Beach forecast for Rockville
Today, Thursday, October 29, 2026 · local time (EDT) · South Carolina, United States Today, Thu, Oct 29 · EDT- Swimming
- Calm · 2.6 ft
- Water
- 68 °F · cool
- Max UV
- 4 · SPF 30
- Low tide
- 4:41 am and 5:38 pm
Rip current risk today: high (statement in effect) · tomorrow: moderate (NWS)
Stay out of the water: rip currents can pull even strong swimmers out to sea. If one catches you, don't swim against it: swim parallel to the shore and wave for help.
Today, Thursday, October 29, it's a fair beach day in Rockville (5/10). The best hours are from 2:00 pm to 6:00 pm: pleasant temperatures and low tide at 5:38 pm, though with light offshore wind and rip currents. The best day this week is Wednesday, November 4, at 9/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 5Fair beach day | 2:00–6:00 pm | Calm · 2.6 ft | 68 °F | 4 |
| Fri 30 | 7Good beach day | 12:00–5:00 pm | Calm · 1.8 ft | 68 °F | 5 |
| Sat 31 | 2Not a beach day | No good window | Calm · 2.8 ft | 69 °F | 4 |
| Sun 1 | 2Not a beach day | No good window | Calm · 2.6 ft | 69 °F | 4 |
| Mon 2 | 2Not a beach day | No good window | Use care · 3.3 ft | 69 °F | — |
| Tue 3 | 6Fair beach day | 9:00 am–2:00 pm3:00–5:00 pm | Calm · 2.9 ft | 70 °F | — |
| Wed 4 | 9Perfect beach day | 10:00 am–3:00 pm | Calm · 2.6 ft | 71 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
- Official statement: Rip Current Statement (NWS Charleston SC)
- Sun and clouds
- Feels like 77 °F: pleasant
- UV 4 (moderate): SPF 30 sunscreen
- Water at 68 °F (cool)
- Low tide at 5:38 pm: more sand
- Light offshore wind (11 mph): it blows floats and inflatables out to sea
Today, hour by hour
- Swimming Calm · 2.6 ft
2.6 ft waves: calm for swimming. Always follow the lifeguard's flags.
- Water 68 °F
Cool: refreshing on a hot day.
- Sun & sunscreen UV 4 · SPF 30
Max UV 4 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 12 mph
Offshore breeze (12 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 4:41 am
Low tide at 4:41 am and 5:38 pm: that's when there's the most sand. High tide at 11:16 am and 11:30 pm.
The best window, 2:00 pm to 6:00 pm, brings pleasant temperatures and low tide at 5:38 pm, though with light offshore wind and rip currents.
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 |
|---|---|---|---|---|---|---|
| 9:00 am | 1 | Mainly clear | 65 °F | 10 mph | 2.8 ft | 1 |
| 10:00 am | 0 | Partly cloudy | 67 °F | 11 mph | 2.8 ft | 2 |
| 11:00 am | 0 | Overcast | 71 °F | 11 mph | 2.7 ft | 2 |
| 12:00 pm | 0 | Overcast | 74 °F | 11 mph | 2.6 ft | 3 |
| 1:00 pm | 1 | Partly cloudy | 76 °F | 12 mph | 2.6 ft | 4 |
| 2:00 pm | 5 | Partly cloudy | 77 °F | 11 mph | 2.6 ft | 4 |
| 3:00 pm | 5 | Partly cloudy | 77 °F | 10 mph | 2.6 ft | 3 |
| 4:00 pm | 5 | Partly cloudy | 77 °F | 10 mph | 2.6 ft | 1 |
| 5:00 pm | 5 | Partly cloudy | 75 °F | 8 mph | 2.6 ft | 0 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Rockville
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Seabrook Beach 3.1 mi · SE
- Kiawah Beachwalker Park 3.7 mi · E
- Parking
Water quality: check the official beach advisories for South Carolina (S.C. Beach Guide).
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 Rockville
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 1 of 3, warmth 3 of 4, calm sea 1 of 1, water 0.5 of 1 and tide 0.9 of 1; minus wind 0.5 and waves 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 Rockville
Is it a beach day in Rockville today?
A fair beach day: 5/10. Best from 2:00 pm to 6:00 pm, with pleasant temperatures and low tide at 5:38 pm, though with light offshore wind and rip currents.
What are the swimming conditions in Rockville today?
2.6 ft waves: calm for swimming. High rip current risk (official statement in effect). If you're caught in a rip current, don't swim against it: swim parallel to shore and wave for help. Always follow the lifeguard's flags.
How warm is the water in Rockville?
About 68 °F today: cool. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Rockville today?
UV reaches 4 (moderate): SPF 30 sunscreen, sunglasses and a hat.
When is low tide in Rockville?
Today low tide is at 4:41 am and 5:38 pm: that's when there's the most sand. High tide is at 11:16 am and 11:30 pm.
What about tomorrow? Will it be a beach day in Rockville?
Tomorrow, Friday, October 30: a good beach day (7/10), best from 12:00 pm to 5:00 pm.
What beaches are near Rockville?
Seabrook Beach (3.1 mi) and Kiawah Beachwalker Park (3.7 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 Rockville 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 Point of Pines (NOAA) and the sun from astronomy-engine. Slackwater database (https://github.com/openwatersio/slackwater-database)