January in Sifnos — off-season conditions
Hardest · 2.1/10Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 92 mm of rain this month — a flexible day or two helps — with about 1 days with 6+ hours of sunshine and 9.7 hours of daylight to work around it.
That is 2.1/10 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 layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, July is materially better in Sifnos — 7.8 points higher on the same scale.
February in Sifnos — off-season conditions
Hardest · 3.6/10Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 56 mm of rain this month — a flexible day or two helps — with about 7 days with 6+ hours of sunshine and 10.6 hours of daylight to work around it.
That is 3.6/10 on the same scale — 10th of 12 months, versus 9.9/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, July is materially better in Sifnos — 6.3 points higher on the same scale.
March in Sifnos — workable with trade-offs
Trade-offs · 5.3/10March averages 14°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 18 days with 6+ hours of sunshine and 11.7 hours of daylight.
It scores 5.3/10 here, 8th of 12 months, against 9.9/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Flexible dates? July scores 4.6 points higher here — enough to change the trip.
April in Sifnos — reliably good (7th best month)
Good · 7.2/10Temperatures hover around 17°C (63°F) — the kind of month where neither heat nor cold forces the schedule.
With around 21 mm of rain, any showers tend to pass through rather than settle in; about 28 days with 6+ hours of sunshine and 13 hours of daylight fill the rest.
That is 7.2/10 on the same scale — 7th of 12 months, versus 9.9/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
If your dates are flexible, July is materially better in Sifnos — 2.7 points higher on the same scale.
May in Sifnos — reliably good (6th best month)
Good · 8.2/10May averages 19°C (67°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
Expect 20 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 14 daylight hours.
It scores 8.2/10 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 light clothing, swimwear and real sun protection.
Flexible dates? July scores 1.7 points higher here — enough to change the trip.
June in Sifnos — one of the year's strongest windows (3rd)
Best window · 9.8/10With 24°C (75°F) on average, June delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 8 mm for the month, rain will not shape your plans; you get about 30 days with 6+ hours of sunshine and 14.5 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for Sifnos at 9.8/10 (3rd of 12), just behind July at 9.9/10.
Budget for peak pricing, and crowds are moderate. 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, swimwear and real sun protection.
July in Sifnos tops the year's climate scores
Best window · 9.9/10With 26°C (78°F) on average, July delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 3 mm for the month, rain will not shape your plans; you get about 31 days with 6+ hours of sunshine and 14.3 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Sifnos at 9.9/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and 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, swimwear and real sun protection.
August ranks 4th of 12 for Sifnos — one of the best windows
Best window · 9.8/10August averages 26°C (80°F) and humidity near 74%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rain is a non-issue at 6 mm for the month, with about 31 days with 6+ hours of sunshine and 13.4 hours of daylight to work with.
A 9.8/10 puts this among the year's best months in Sifnos (4th of 12); only July scores higher, at 9.9/10.
Plan for peak pricing, with this is one of the busiest months here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
September in Sifnos — one of the year's strongest windows (2nd)
Best window · 9.9/10September averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
Expect 15 mm of rain — occasional showers rather than washed-out days — alongside about 25 days with 6+ hours of sunshine and 12.2 daylight hours.
A 9.9/10 puts this among the year's best months in Sifnos (2nd of 12); only July scores higher, at 9.9/10.
Plan for peak pricing, with crowds are moderate. 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, swimwear and real sun protection.
October holds up well in Sifnos — 5th best month
Good · 8.3/10With 22°C (71°F) on average, October delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 9 mm for the month, rain will not shape your plans; you get about 16 days with 6+ hours of sunshine and 11 hours of daylight.
That is 8.3/10 on the same scale — 5th of 12 months, versus 9.9/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection.
If your dates are flexible, July is materially better in Sifnos — 1.6 points higher on the same scale.
November in Sifnos — off-season conditions
Hardest · 4.8/10Temperatures hover around 19°C (65°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 61 mm of rain this month — a flexible day or two helps — with about 5 days with 6+ hours of sunshine and 10 hours of daylight to work around it.
That is 4.8/10 on the same scale — 9th of 12 months, versus 9.9/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, July is materially better in Sifnos — 5.1 points higher on the same scale.
December in Sifnos — the hardest end of the year
Hardest · 2.3/10December averages 16°C (61°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 102 mm this is a genuinely wet month: almost no days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 2.3/10 here, 11th of 12 months, against 9.9/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Flexible dates? July scores 7.6 points higher here — enough to change the trip.
