Great Diamond Island, Maine Fishing Weather Forecast

Current Conditions

Temperature: 82°F (feels like 82°F). Condition: Clear.

Wind: 8 mph WNW, gusts to 12 mph.

Barometric Pressure: 30.03 inHg (1017 hPa).

Humidity: 32%. UV Index: 8. Cloud Cover: 0%.

Visibility: 41 miles. Dew Point: 49°F.

Sunrise: 4:59 AM. Sunset: 8:21 PM.

Fishing Score

Today's best fishing score: 87/100 (Excellent)

Pressure Analysis

Pressure falling rapidly — fish are feeding aggressively before the front arrives. Excellent fishing window!

Best fishing windows based on pressure: 00:00, 01:00, 02:00, 03:00, 04:00, 05:00, 07:00, 08:00, 10:00, 12:00, 13:00, 15:00, 16:00, 17:00, 18:00, 19:00, 20:00, 22:00, 23:00, 02:00, 03:00, 04:00, 05:00, 06:00, 09:00, 10:00, 11:00, 12:00, 14:00, 15:00, 16:00, 17:00, 18:00, 19:00, 20:00, 21:00, 22:00, 23:00, 00:00, 02:00, 03:00, 04:00, 05:00, 06:00, 09:00, 10:00, 11:00, 12:00, 13:00, 15:00, 16:00, 17:00, 23:00

7-Day Fishing Weather Forecast

Day	Date	High	Low	Condition	Wind	Pressure	Precip	UV	Fishing Score
Tue	2026-06-09	84°F	54°F	Overcast	9 mph WSW	30.03 inHg	0%	8	87/100 (Excellent)
Wed	2026-06-10	77°F	59°F	Rain	8 mph ESE	29.85 inHg	31%	7	83/100 (Excellent)
Thu	2026-06-11	83°F	61°F	Drizzle	8 mph ESE	29.74 inHg	31%	7	81/100 (Excellent)
Fri	2026-06-12	67°F	57°F	Foggy	8 mph ESE	29.85 inHg	16%	7	79/100 (Good)
Sat	2026-06-13	78°F	58°F	Showers	10 mph SSE	29.80 inHg	44%	7	86/100 (Excellent)
Sun	2026-06-14	82°F	58°F	Overcast	13 mph WNW	29.80 inHg	13%	7	86/100 (Excellent)
Mon	2026-06-15	77°F	51°F	Foggy	12 mph SSW	29.97 inHg	21%	7	86/100 (Excellent)

Frequently Asked Questions

What's the fishing weather forecast for Great Diamond Island, Maine?

Great Diamond Island's 7-day fishing weather forecast peaks at a fishing score of 87/100 (Excellent). The forecast factors in barometric pressure, wind, temperature, cloud cover, and precipitation. The full hour-by-hour breakdown and 72-hour pressure chart are on this page.

Is today a good day to fish at Great Diamond Island?

Today at Great Diamond Island, Maine the best fishing window scores 87/100 (Excellent) and the barometric pressure is falling. A falling pressure trend often triggers more aggressive feeding before a front arrives.

How does barometric pressure affect fishing at Great Diamond Island?

Fish are most active when barometric pressure is stable (29.80–30.20 inHg) or slowly falling. A rapid drop, often before a storm front, can trigger a feeding frenzy, while a sharp rise after a front passes usually makes fish lethargic. Right now Great Diamond Island's pressure is 30.03 inHg and falling.

What wind speed is best for fishing at Great Diamond Island?

Light to moderate winds (5–15 mph) are ideal — they create surface chop without making seas dangerous. Today's forecast shows 8 mph from the WNW at Great Diamond Island, Maine.

How accurate is HookCast's fishing weather for Great Diamond Island?

Weather data for Great Diamond Island, Maine is sourced from Open-Meteo (CC-BY 4.0), which uses NOAA observations and ECMWF forecast models. The forecast updates every 30 minutes. Tide data for paired tide pages is from NOAA Center for Operational Oceanographic Products (CO-OPS).

Maine

Great Diamond Island Fishing Weather

82°F

Clear · Feels like 82°F

7-day forecast with barometric pressure trends

Tide Chart

82/ 100

Excellent

Fishing Score

Was this accurate?

Wind

8 mph WNW

Pressure

30.03"

Humidity

32%

UV Index

Dew Point

49°F

Visibility

41 mi

Sunrise

4:59 AM

Sunset

8:21 PM

Pressure Analysis

Pressure is falling rapidly — fish may become very active before the front

Barometric Pressure Trend

Green zones = best fishing windows (stable/slowly falling pressure)

Pressure (inHg)

Best Fishing Window

Ideal Range (29.80–30.20")

Today's Fishing Timeline

Combining pressure trend, solunar periods & tide data

Best

Good

Average