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Regulars are specific that early May can bring wild swings, an odd day or night trending 10 degrees Celsius higher or lower than the norm, so layering is the standard advice rather than trusting one forecast. Our row backs that cool, changeable read, 14.8C over 5.4C nights feeling 2C, with 97.6mm of rain across 9.3 days and a trace of late snow, 0.6cm. Regulars are consistent this month runs noticeably colder than September, and specifically flag that provincial and national park visitor centres and facilities don't fully open until around mid-May, worth checking before planning a trip built around them. The sea stays cold at 6.4C, no swimming without a wetsuit. The record: humidity 79 percent, 9 hours of sun, a 19.1 kph wind and AQI 39.

Regulars are blunt about this month's reputation on the Atlantic-facing coast: it is the worst for fog, a southerly wind pulling it in over cool water to sit through the day even on an otherwise warm one, and September is repeatedly recommended over June for exactly that reason - the sea has warmed by then and the fog eases. Our row carries the dampness, 106.9mm of rain across 9.6 days at 82.9 percent humidity, alongside a mild 19.7C over 10.3C. The sea itself is genuinely cold at 10C, part of why the fog forms in the first place. Their packing answer covers both a warm afternoon and a foggy one: shorts, a wind and waterproof shell, and a sweater for evenings that turn cool fast. The record: 9.4 hours of sun, an 18.6 kph wind and AQI 38.

September is the transition month here and regulars rate it: highs in the low twenties, nights near 10C, and usually the driest month of the year - our row gives 21.3C over 12.1C with 87mm across only 6.1 days. On hurricanes they are calm and specific. Warnings come most years between August and October, most systems have stopped being hurricanes by the time they reach Nova Scotia and arrive as storms with wind and rain, and one regular counts a single trip cut short across many years of visits. Autumn colour is the one thing September cannot promise - some reds in the green by the end of the month, the real display in early October. The record: humidity 80 percent, 8.2 hours of sun and a 17.4C sea.

August is the month Nova Scotia regulars point to, and their reason is fog rather than temperature: the fog season is past by mid-August at the latest, after which foggy days are limited to the ones that were going to be wet anyway. Where it lingers is the Atlantic-facing coast; inland and the Bay of Fundy side see far less. Warm but not hot is the standing description, with a heat wave of about four days somewhere in the month, which our row's 24.2C reading as 26C supports. The other August fact is hurricanes: Nova Scotia gets warnings every year from August to October, most arrive downgraded, and the real consequence is high wind, heavy rain and widespread power cuts. The record: 15.3C nights, 7.3 precipitation days carrying 97.9mm and a 17.7C sea.