Starlink Weather Performance: Rain, Snow, Wind, Heat & Thunderstorms

Does Starlink work in bad weather?

Short answer: yes. Long answer: it depends on which kind of bad weather, how extreme, and whether your install was done properly. Starlink is dramatically more weather-resilient than the geostationary satellite internet it replaced. Ku-band handles rain better than Ka-band, the phased array has no moving parts to seize in a storm, and the low-earth-orbit constellation can often route around a localized storm cell by handing off to a satellite on the other side of the sky. That said, every dish has operating limits, and every install has a mount that becomes the weakest link long before the electronics do. A properly installed Gen 3 Standard will ride out a thunderstorm with 5 to 15 percent speed loss. A badly installed one will come off the roof in 70mph gusts. This guide covers both sides: the actual performance envelope and the install realities that determine whether you stay online. If obstruction issues compound with weather at your site, our obstruction analyzer is the right first stop.

Rain fade: what it is and how much it actually costs you

"Rain fade" is the industry term for signal attenuation caused by water droplets absorbing and scattering the microwave signal between your dish and the satellite. The effect scales with frequency. The higher the band, the worse rain hurts it. Starlink uses Ku-band (12-18 GHz)for user downlink, which happens to be the sweet spot: high enough for real bandwidth, low enough to stay mostly resilient to rain. Legacy HughesNet and Viasat use Ka-band (26-40 GHz) and get absolutely hammered in the same storm.

In practice, light rain produces zero measurable effect. Moderate rain (around 10mm/hour) typically costs 3 to 8 percent of peak speed, invisible to most users. Heavy rain (25mm/hour and up) shows up as 10 to 20 percent speed loss plus a few handoff dropouts per hour. Tropical downpours and squall lines exceeding 50mm/hour can produce brief full outages, usually lasting seconds to a minute or two as the storm cell moves out of the beam path. Compared against legacy satellite services where a summer storm means total blackout, this is a night-and-day difference. See our service comparison for the full side-by-side.

One non-obvious source of rain fade is water pooling on the dish face. The phased array is hydrophobic by design, but in windless torrential rain a sheet of standing water can form and attenuate the signal by an extra 3 to 5 dB. The dish auto-tilts slightly to shed water when this is detected, but on flat-mount installs (roofs, decks) water can pool against the lower edge. A 5-degree mount tilt away from the prevailing storm direction fixes this.

Snow: the self-heating feature and its real cost

Every Starlink dish since Gen 2 ships with a built-in snow-melt heater. It's an electrical resistive element laminated behind the phased array, activating automatically when the dish detects moisture at or below freezing. Starlink doesn't publish the exact watts, but wattmeter measurements from cold-climate users consistently show an extra 20 to 30W on top of normal draw when the heater runs, roughly tripling idle consumption on a Standard dish, from ~45W to ~75W.

For grid-powered homes this is a non-issue. For off-grid and RV/boat users, a snowy January can silently double the monthly electricity budget and catch an undersized battery bank flat-footed. Our off-grid sizer bakes this snow penalty into the autonomy calculation for cold-climate installs.

The heater has limits. In light snow (under 2cm/hour) it keeps the face clear with no user action required. In heavy wet snow (5cm/hour and up) accumulation outpaces melting, and you'll see signal degrade over 15 to 30 minutes until the dish is buried. At that point you need to manually clear it. Use a soft broom or snow brush, never a metal ice scraper, shovel, or pressure washer. The phased-array surface scratches easily and any damage to the top layer permanently degrades signal quality. If the dish is pole-mounted beyond arm's reach, the Starlink app has a "Stow" command that folds it flat, which lets gravity dump most of the accumulation before you un-stow.

High winds: dish rating vs mount rating

Wind ratings confuse most buyers because there are two of them, and the dish spec is usually fine while the mount spec is what fails. The Gen 3 Standard dish is rated for 60mph (96 km/h) sustained wind while actively tracking satellites, and 100mph (160 km/h) when stowed flat via the app. The High Performance dish improves on this significantly: 100mph operating, 120mph stowed. The Maritime dish is rated 174mph operating, but at that point your boat, RV, or roof is already a bigger concern than the antenna.

The mount is where real-world installs fail. A stock Starlink pivot-mount or eave bracket is rated around 80mph. Many third-party ridge clamps claim 90 to 110mph. A proper concrete-footed 3m pole with cross-bracing can hit 120mph+. The failure mode is almost always the bracket hardware or the fasteners into the roof deck, not the dish itself. If you're in a tornado alley, hurricane coast, or exposed mountain site, budget as much on the mount as you did on the dish. The Starlink app can force the dish into stow position with a single tap, and for any warning over 70mph sustained, do it. A stowed dish has roughly 40 percent less wind profile than a tracking one.

Extreme cold: −30°C and the battery problem

Starlink's published dish operating range is −30°C to +50°C(−22°F to 122°F). The router is slightly narrower at −20°C to +40°C. In real Yukon, Siberian, and Scandinavian winter deployments, the dish itself reliably operates down to its spec limit. the internal electronics generate enough waste heat to keep themselves happy even when ambient drops to −40°C. What fails first is usually the PoE cable jacket (it stiffens and cracks when flexed at extreme cold) and, for off-grid installs, the batteries.

LiFePO₄ batteries refuse to accept charge below 0°C / 32°F. This is the chemistry doing its job. Charging cold lithium causes plating damage, and it means a winter off-grid setup silently stops charging every morning if the battery bank lives outside the heated envelope. The dish will run on stored energy until it drains, then go dark. The fix is either a heated battery (Battle Born, Dakota Lithium, and similar brands self-heat below 4°C) or a low-wattage thermostat-controlled heating pad. Our off-grid power sizer flags this automatically for cold-climate builds. AGM batteries tolerate cold charging better but die faster in every other way. See the linked guide for the full chemistry comparison.

One practical note: cold-boot peak power is higherthan warm-boot. A dish that's been sitting at −25°C will briefly pull 110 to 120W during the first 3 to 5 minutes of power-up as the internal heaters bring the phased array up to operating temperature. Size your inverter or DC-DC converter for this transient, not the average.

Extreme heat: thermal shutdown at 50°C dish temperature

The upper limit is what bites Arizona, Texas, Gulf, and Australian-outback users. Published operating max is 50°C (122°F) measured at the dish itself, not ambient air. This distinction matters enormously. On a 40°C summer afternoon in Phoenix, dark asphalt shingles under the dish can radiate 70°C, and a dish mounted flush to that roof sees an internal temperature well over spec. The result: thermal shutdown. The dish quietly goes offline between roughly 2pm and 6pm and comes back when the roof cools. Users often misdiagnose this as a service outage.

Three fixes work. First, light-colored mount hardware and a 10cm ventilation gap between the dish and the roof surface, this alone knocks 8 to 12°C off the dish temperature. Second, pole mount elevation, getting the dish 2m above the roof into moving air drops temperature another 5°C on average. Third, in the most extreme cases, a reflective white sunshade mounted beside (never over) the dish, positioned to block low-angle western sun without obstructing the sky cone. Direct shading over the dish counts as an obstruction and is worse than the overheating it prevents.

Thunderstorms: lightning, grounding, and insurance

Lightning is the single most expensive weather failure mode for Starlink. A direct strike on the dish is unsurvivable. The electronics, PoE injector, router, and whatever was plugged into the router all die instantly. There's no consumer product that survives a direct hit. What you're actually protecting against is induced surges from nearby strikes, which are far more common and entirely mitigable.

The National Electrical Code (NEC Article 810) requires any roof-mounted antenna to be bonded to the building's grounding electrode system using 10 AWG copper wire (or equivalent aluminum) run in the shortest practical path to the main ground rod. Starlink sells a grounding kit for about $25 that includes a lug, mast clamp, and appropriate wire. Most DIY installs skip this step and most work fine, until the one storm when they don't. Beyond code compliance, insurance implications are real: several carriers have started denying Starlink surge claims when the install is ungrounded, citing the NEC requirement. If your dish is on the roof, ground it. If you're on a pole in the yard, still ground it. A whole-home surge protector at the electrical panel ($80-150) adds a second defense layer cheaply. Disconnect the router from any hardwired ethernet devices when thunderstorms are forecast overnight. A single surge up the cable can kill an expensive PC or TV just as easily as the router itself.

Hurricanes and tropical storms: take it down, stake it, or bracket it?

Hurricane prep for Starlink comes down to three decisions based on your mount rating and the forecast wind speed. For tropical storms and Category 1 hurricanes (39 to 95mph sustained), any properly installed mount rated 100mph+ can ride it out with the dish stowed via the app. For Category 2 (96-110mph), stock eave mounts should come down; ridge clamps and concrete-footed poles stay up but stowed. For Category 3 and above (111mph+), take everything off the roof. A $599 dish is replaceable. A collapsed mount taking roof decking with it costs ten times that.

Regardless of category, disconnect the PoE cable at the routerbefore the storm arrives. Water intrusion at the cable entry combined with induced surges from storm-cell lightning is responsible for more hurricane Starlink failures than wind itself. Seal the cable end with a plastic bag and electrical tape. Bring the router indoors. If you're in a coastal area and staying home, keep the dish in its box inside. You can redeploy in 15 minutes once the storm passes, which beats ordering a replacement through a flooded logistics network for three weeks.

Weather condition impact summary

Dish model temperature & wind ratings

Climate-by-climate install advice

Nordic winter (Scandinavia, Yukon, Alaska). The dish itself is fine — operating limit matches normal winter. The real concerns are off-grid battery heating, PoE cable flex management (run it through a foam-insulated sleeve where it transitions from outdoor to indoor), and pole mount frost-heave. Set pole concrete footings below your local frost line, typically 1.2m in most Nordic zones. Accept that snow clearing is a manual chore in heavy storms.

Arizona / desert Southwest summer. Thermal shutdown is your enemy. Pole mount at 2m+ over roof, light-colored mount, ventilation gap between dish and any surface. Avoid flush-to-dark-shingle installs at all costs. Plan for 3 to 4 hours of afternoon offline in July-August if you mount it poorly; zero if you follow the elevation rules.

Gulf Coast / hurricane zone. Mount to 100mph+ rating minimum. Plan a removal procedure and practice it once in calm weather — knowing you can get the dish off the roof in 15 minutes is the difference between saving $599 and not. Ground per NEC 810 without exception. Disconnect the router at the first tropical storm watch.

Pacific Northwest / UK / coastal rain. The least concerning climate. Rain fade is genuinely minor, and temperatures never push either extreme. The only real issue is sustained winter overcast reducing off-grid solar generation — handled by oversizing the panel array. Moss and algae growth on the dish face over years is a minor consideration; a soft rinse twice a year keeps it clean.

High-elevation mountain / exposed ridge. Wind is the dominant concern, often exceeding stock mount ratings in routine storms. Budget for a 9m guyed pole with concrete footing, or a properly engineered ridge clamp. Cold is a secondary concern for battery systems. Run a speed test weekly in winter to catch gradual mount-flex issues early — drifting alignment shows up as degrading speeds before it shows up as a fallen dish. The coverage map also helps confirm whether you have redundant satellite arcs available for handoff in your exact location.

FAQ

Weather-proof the install, not just the dish

The pattern across every weather failure mode we've covered is the same: the dish itself is more resilient than its surroundings. Rain fade is real but small. Snow melts itself with an extra 25W. Cold operates to spec. Heat mostly depends on mount choices. Wind limits are almost always mount limits, not dish limits. Lightning is entirely mitigable with proper grounding. The install decisions — where you mount it, what you mount it to, how you ground it, how your off-grid power survives a cold snap — determine whether the dish delivers its spec in your actual weather. Use the tools below to get both sides right before your first storm.