Castle Island (NOS) 8444069 wind

Castle Island (NOS) 8444069 is a land weather station near South Boston in the Massachusetts Bay and Marblehead sailing area. Readings from NOAA NDBC.

Latest observation

Now 6 kn from SW (220°), gusting 8 kn, 2026-11-04 00:30 UTC (Tuesday 3 Nov 19:30 America/New_York). Air 18°C.

The last 24 hours

24 h: mean 6 kn, 79 readings, gust 16 kn, peak mean 12 kn, mostly SW (225°).

Recent readings

2026-11-04 00:30 UTC: 6 kn from SW (220°), gust 8 kn
2026-11-03 23:30 UTC: 5 kn from SSW (210°), gust 6 kn
2026-11-03 22:54 UTC: 5 kn from SSW (200°), gust 6 kn
2026-11-03 21:30 UTC: 2 kn from S (190°), gust 3 kn
2026-11-03 20:48 UTC: 5 kn from WSW (240°), gust 8 kn
2026-11-03 19:54 UTC: 3 kn from S (190°), gust 5 kn
2026-11-03 18:48 UTC: 6 kn from SW (230°), gust 9 kn
2026-11-03 17:30 UTC: 2 kn from SSE (150°), gust 5 kn

Position 42.341, -71.012; exposure coastal. Castle Island (NOS) 8444069 is on the shore: it reads sea wind well, land wind less so.

Forecast against this station

Judged on the forecast published by 6 am the same morning, over the last 7 days ECMWF IFS 0.25° has had the smallest wind-speed error at Castle Island (NOS) 8444069: 2.0 kn on average across 51 hourly comparisons, against 2.4 kn for HRRR 3 km (NOAA).

Judged on the forecast published by 6 pm the evening before, over the last 7 days ECMWF IFS 0.25° has had the smallest wind-speed error at Castle Island (NOS) 8444069: 2.1 kn on average across 51 hourly comparisons, against 2.4 kn for HRRR 3 km (NOAA).

How forecasts are checked.

Conditions map · All stations · Weather models

Stations near Castle Island (NOS) 8444069

Boston/Logan Intl, 1.2 nm away
Stone Living Lab Rainsford Island Weather Station, 3.1 nm away
SLL-3425 Boston Harbor Entrance Buoy, 4.1 nm away
EW1152 weather, 2.4 nm away
EW2727 weather, 2.4 nm away
DW3706 weather, 2.8 nm away