📍 Hamilton, Bermuda
Bermuda weather, decoded for locals and guests alike — focused on rainfall, tank levels, tides, and the conditions that matter most on a small island in the Atlantic.
Bermuda Weather — What You Actually Need to Track
Most weather apps were built for continental audiences. They give you a temperature, a percentage chance of rain, and a generic radar loop. For most of the world, that's enough. For Bermuda, it leaves out everything that matters.
Bermuda is a small island — 21 square miles — sitting alone in the mid-Atlantic, roughly 1,000 km east of Cape Hatteras. It straddles the subtropical climate zone and sits directly in the recurvature path of Atlantic hurricanes. The surrounding Gulf Stream keeps winters mild and summers warm, but it also means weather systems can develop and intensify quickly. A calm morning and a 30-knot afternoon are entirely normal here.
What makes Bermuda's weather genuinely different from anywhere else is the relationship between rain and water supply. The island has no rivers, no reservoirs, and no large natural freshwater source. Every household depends on rainwater collected through a roof catchment system and stored in an underground cistern — the tank. When a storm passes without delivering meaningful rain, that's not a weather inconvenience, it's a water supply problem. When a proper "tank rain" event arrives — sustained, heavy rain that actually moves the needle on a 10,000–20,000 gallon tank — Bermudians notice.
This is why Tankrain BDA tracks the things it does. Rainfall totals matter more than rain probability. The 7-day forecast matters because it tells you how your tank will look by the weekend. The ocean and tide data matters because half the island lives within a short walk of the water. The Atlantic storm tracker matters because Bermuda is not big enough to hide from a hurricane. All the data on this page comes from trusted public sources: Open-Meteo for weather and marine forecasts, NOAA CO-OPS for tide predictions, NOAA NHC for storm tracking, and NDBC Buoy 41049 anchored just south of the island for real-time ocean observations.
24-Hour Forecast
Hour-by-hour temperature and rainfall for the next 24 hours — useful for deciding whether to leave washing on the line, time an outdoor job, or know if you'll get soaked on the way home. The chart shows temperature as a line and precipitation as bars so you can see both trends at a glance. Rainfall is expressed in millimetres; even a small bar in the chart can mean a useful amount for your tank if it's spread across several hours.
🌡️ Temperature & Precipitation – 24 hrs
7-Day Forecast
A week-ahead outlook of daily highs, lows, and rain days — handy for planning a weekend on the water, a construction schedule, or just knowing when to expect the next decent tank rain. Each card shows the forecast weather condition, high and low temperatures, and daily precipitation total. The rainfall column is the most important number for Bermuda households: anything under 5mm per day is unlikely to make a meaningful difference to your tank, while a day with 25mm or more is a genuine refill event. Visit the Rainfall page for the full tank calculator.
Ocean & Tides
Live tide times, wave height, swell, sea temperature, and current conditions — everything a boater, diver, fisherman, or beach-goer needs before heading to the water. Tide predictions come from NOAA's station at St. Georges Harbour (Station 2695540), the most accurate available for the island. Wave and swell data is from Open-Meteo's marine model, cross-referenced against NDBC Buoy 41049 anchored south of Bermuda. Sea temperature is the surface reading, which matters for swimming and can vary by a few degrees between the south shore and the harbour.
📈 Tide Height – (MLLW, m)
Wind Detail
Current wind speed, direction, and gusts plotted over 24 hours — on an island surrounded by open ocean, wind shifts fast and matters to anyone sailing, cycling, or working outdoors. The wind rose shows current direction; the chart shows how speed and gusts evolve through the day. Bermuda's wind is most consistent from the southwest in summer and from the north and northwest in winter, but frontal passages can swing direction by 180 degrees in under an hour. The Beaufort scale label gives a plain-language sense of what the current conditions mean on the ground.
💨 Wind Speed & Gusts – 24 hrs (km/h)
Atlantic Storm Tracker
Keep an eye on what's brewing in the Atlantic — whether you're securing the boat ahead of hurricane season or bracing for a winter gale, knowing what's coming early is how Bermudians stay one step ahead. Storm data feeds directly from NOAA's National Hurricane Center. The map shows active tropical systems, their current tracks, and forecast cones. The Rain Radar overlay pulls real-time precipitation imagery so you can watch a squall line approach in real time. The NDBC Buoy 41049 readings in the sidebar reflect actual ocean conditions just 400 km south of the island — one of the earliest indicators of swell building ahead of a tropical system.
From Our Guides
In-depth articles on the weather topics that matter most in Bermuda — written for people who actually live here and need to understand what the forecast means for their tank, their boat, and their home.
What Is Tank Rain?
Bermudians know the difference between a drizzle and a proper tank rain event — and they feel it when a storm passes without delivering. Here's what it means and why it matters.
ReadBermuda Hurricane Season Guide
Bermuda sits directly in the Atlantic recurvature zone. What every homeowner needs to know before, during, and after a tropical storm — including what it does to your water supply.
ReadWhere Does Bermuda Get Its Water?
No rivers, no lakes, no traditional supply. The three sources that keep 64,000 people supplied on a small island — and why rain is the most personal of them all.
Read