January in Mary — middling scores, decent value
Trade-offs · 6.1/10January averages 3°C (38°F), cold enough that sightseeing works in bursts rather than in one long day on foot.
Rain is a non-issue at 10 mm for the month, with about 1 days with 6+ hours of sunshine and 9.7 hours of daylight to work with.
It scores 6.1/10 here, 8th of 12 months, against 9.9/10 in the destination's best month.
Figure on mid-season pricing, with crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip.
Flexible dates? April scores 3.8 points higher here — enough to change the trip.
February holds up well in Mary — 7th best month
Good · 7.1/10February averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 22 mm of rain — occasional showers rather than washed-out days — alongside about 7 days with 6+ hours of sunshine and 10.6 daylight hours.
It scores 7.1/10 here, 7th of 12 months, against 9.9/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
Flexible dates? April scores 2.8 points higher here — enough to change the trip.
March ranks 2nd of 12 for Mary — one of the best windows
Best window · 9.1/10Temperatures hover around 13°C (56°F) — the kind of month where neither heat nor cold forces the schedule.
With around 18 mm of rain, any showers tend to pass through rather than settle in; about 16 days with 6+ hours of sunshine and 11.7 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Mary at 9.1/10 (2nd of 12), just behind April at 9.9/10.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
April in Mary — the year's strongest window
Best window · 9.9/10April averages 20°C (68°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Rain is a non-issue at 14 mm for the month, with about 25 days with 6+ hours of sunshine and 13 hours of daylight to work with.
On our climate-comfort scale this is the top-ranked month of the year for Mary at 9.9/10 — the reference point every other month on this page is measured against.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection.
May in Mary — one of the year's strongest windows (4th)
Best window · 8.9/10At 24°C (75°F) this is comfortable city weather in May, with sightseeing easiest before lunch and after the afternoon peak.
With around 25 mm of rain, any showers tend to pass through rather than settle in; about 31 days with 6+ hours of sunshine and 14 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Mary at 8.9/10 (4th of 12), just behind April at 9.9/10.
Budget for mid-season pricing, and crowds are moderate.
Pack light clothing, a hat and real sun protection.
June in Mary — middling scores, decent value
Trade-offs · 5.8/10June averages 32°C (89°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rain is a non-issue at 0 mm for the month, with about 30 days with 6+ hours of sunshine and 14.6 hours of daylight to work with.
It scores 5.8/10 here, 10th of 12 months, against 9.9/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Flexible dates? April scores 4.1 points higher here — enough to change the trip.
July in Mary: mixed conditions, plan around the weather
Trade-offs · 5.8/10July averages 33°C (92°F) — genuinely punishing heat. Anything outdoors needs to happen before 10am.
Rain is a non-issue at 0 mm for the month, with about 31 days with 6+ hours of sunshine and 14.4 hours of daylight to work with.
It scores 5.8/10 here, 11th of 12 months, against 9.9/10 in the destination's best month.
Figure on low-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Flexible dates? April scores 4.1 points higher here — enough to change the trip.
August in Mary — middling scores, decent value
Trade-offs · 5.2/10Days in August average 30°C (85°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 66 mm of rain this month — a flexible day or two helps — with about 31 days with 6+ hours of sunshine and 13.5 hours of daylight to work around it.
That is 5.2/10 on the same scale — 12th of 12 months, versus 9.9/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
If your dates are flexible, April is materially better in Mary — 4.7 points higher on the same scale.
September in Mary — one of the year's strongest windows (5th)
Best window · 8.6/10At 24°C (74°F) this is comfortable city weather in September, with sightseeing easiest before lunch and after the afternoon peak.
At just 0 mm for the month, rain will not shape your plans; you get about 26 days with 6+ hours of sunshine and 12.2 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for Mary at 8.6/10 (5th of 12), just behind April at 9.9/10.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, a hat and real sun protection.
October in Mary — one of the year's strongest windows (3rd)
Best window · 9.1/10October averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rain is a non-issue at 10 mm for the month, with about 14 days with 6+ hours of sunshine and 11 hours of daylight to work with.
A 9.1/10 puts this among the year's best months in Mary (3rd of 12); only April scores higher, at 9.9/10.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
November in Mary: strong conditions, 6th of 12
Good · 7.9/10November averages 12°C (54°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rain is a non-issue at 14 mm for the month, with about 4 days with 6+ hours of sunshine and 9.9 hours of daylight to work with.
It scores 7.9/10 here, 6th of 12 months, against 9.9/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
Flexible dates? April scores 2 points higher here — enough to change the trip.
December in Mary — workable with trade-offs
Trade-offs · 6/10At 3°C (38°F) this is proper winter weather in December: layer up and split the day between outdoor highlights and indoor stops.
At just 6 mm for the month, rain will not shape your plans; you get almost no days with 6+ hours of sunshine and 9.4 hours of daylight.
That is 6/10 on the same scale — 9th of 12 months, versus 9.9/10 for the best month here.
Expect mid-season pricing, and crowds are light for this destination.
Pack insulated layers, a windproof shell, gloves and boots with grip.
If your dates are flexible, April is materially better in Mary — 3.9 points higher on the same scale.
