Is New York sunnier than Islip?

They are nearly tied: New York gets about 2,252 hours of sunshine a year and Islip about 2,252.

Which is warmer, New York or Islip?

Year-round daytime highs are similar: New York averages 15°C (59°F), Islip 15°C (59°F).

Which is better in winter (November–February), New York or Islip?

They are close in the November–February window: New York averages 6/100 (about 7°C days), Islip 6/100 (about 6°C).

Which has the warmer sea, New York or Islip?

Both peak at about 23°C (73°F); month-by-month sea temperatures for both are on this page.

New York vs Islip: which is sunnier?

🇺🇸 United States vs 🇺🇸 United States · 60 km apart · long-term climate normals (NASA POWER, 2001–2020)

New York and Islip are virtually tied for annual sunshine — about 2,252 vs 2,252 hours a year. Month by month it's balanced: each has the higher Sunshine Score in 1 month, with 10 within 2 points.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	New York	Islip
Sunshine hours / year	2,252	2,252
Sunniest month	September (74/100)	July (75/100)
Nov–Feb average score	6/100	6/100
Jun–Aug average score	71/100	73/100
Rain / year	1,313 mm	1,206 mm
Warmest sea	23°C / 73°F	23°C / 73°F
Peak midday UV	7 (high)	7 (high)

New York vs Islip month by month

Month	Sunshine Score		Day high °C		Rain mm		Sea °C
Month	New York	Islip	New York	Islip	New York	Islip	New York	Islip
January	0	0	4°	3°	99	81	6°	5°
February	0	0	4°	3°	95	85	5°	4°
March	0	0	7°	6°	113	105	7°	6°
April	24	24	12°	12°	107	106	10°	9°
May	55	56	17°	17°	101	94	14°	14°
June	71	72	23°	23°	115	110	19°	19°
July	71	75	26°	27°	114	95	23°	23°
August	71	73	26°	27°	114	103	22°	23°
September	74	74	23°	24°	97	99	22°	23°
October	58	52	18°	17°	124	120	18°	18°
November	24	25	12°	12°	101	90	13°	14°
December	0	0	7°	6°	133	118	8°	8°

The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May even · Jun even · Jul Islip · Aug even · Sep even · Oct New York · Nov even · Dec even.

When to pick which

November–February: too close to call — New York averages 6/100, Islip 6/100. Daytime highs are similar (7°C vs 6°C). See the winter sun ranking.
March–May: too close to call — New York averages 26/100, Islip 27/100. Daytime highs are similar (12°C vs 12°C).
June–August: too close to call — New York averages 71/100, Islip 73/100. Daytime highs are similar (25°C vs 26°C).
September–October: New York (average score 66/100 vs 63). Daytime highs are similar (21°C vs 21°C).

Sea temperature

Both seas peak at 23°C / 73°F. Swimmable water (21°C+): New York about 3 months a year, Islip about 3 months a year. Month-by-month sea temperatures are in the table above.

Full month-by-month guides: New York weather by month · Islip weather by month · Best time to visit United States.

More comparisons: New York vs Trenton · New York vs White Plains · New York vs Atlantic City · Islip vs New Haven · Islip vs White Plains · all head-to-heads