Best time to visit Bethany Beach
The best time to visit Bethany Beach is June and September, judged on twenty years of weather records and the events worth going for.
Bethany Beach, Delaware, United States
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 6.6 °C / 44 °F | 1.5 °C / 35 °F | 94 mm / 3.7 in | neither best nor good |
| February | 7.2 °C / 45 °F | 1.9 °C / 35 °F | 93 mm / 3.6 in | neither best nor good |
| March | 10.1 °C / 50 °F | 4.9 °C / 41 °F | 103 mm / 4 in | neither best nor good |
| April | 14.6 °C / 58 °F | 9.5 °C / 49 °F | 92 mm / 3.6 in | good month |
| May | 18.9 °C / 66 °F | 14.4 °C / 58 °F | 93 mm / 3.6 in | good month |
| June | 24 °C / 75 °F | 19.9 °C / 68 °F | 76 mm / 3 in | best month |
| July | 27 °C / 81 °F | 23.3 °C / 74 °F | 86 mm / 3.4 in | good month |
| August | 26.4 °C / 80 °F | 22.7 °C / 73 °F | 94 mm / 3.7 in | good month |
| September | 23.8 °C / 75 °F | 20.2 °C / 68 °F | 85 mm / 3.4 in | best month |
| October | 19.2 °C / 67 °F | 14.9 °C / 59 °F | 121 mm / 4.8 in | good month |
| November | 13.7 °C / 57 °F | 8.8 °C / 48 °F | 89 mm / 3.5 in | good month |
| December | 9.6 °C / 49 °F | 4.7 °C / 40 °F | 116 mm / 4.6 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: good
- JJune: best
- JJuly: good
- AAugust: good
- SSeptember: best
- OOctober: good
- NNovember: good
- DDecember: neither
- Best
- June, September
- Good
- April–May, July–August, October–November
Why these months
April · good
In its favour: share of daylight that is sunny 77%, precipitation 92 mm / 3.6 in, average daily high 14.6 °C / 58 °F, wet days 9.2 days, days with heavy rain 3 days, average daily low 9.5 °C / 49 °F, relative humidity 71%.
Against: feels like (high) 12.3 °C / 54 °F.
May · good
In its favour: feels like (high) 18.9 °C / 66 °F, average daily high 18.9 °C / 66 °F, share of daylight that is sunny 79%, precipitation 93 mm / 3.6 in, days with heavy rain 2.8 days, average daily low 14.4 °C / 58 °F, wet days 10.2 days.
Against: relative humidity 78%.
June · best
In its favour: feels like (high) 26.3 °C / 79 °F, average daily high 24 °C / 75 °F, share of daylight that is sunny 83%, precipitation 76 mm / 3 in, days with heavy rain 2.9 days, wet days 9.7 days, average daily low 19.9 °C / 68 °F.
Against: relative humidity 78%.
July · good
In its favour: share of daylight that is sunny 86%, average daily high 27 °C / 81 °F, precipitation 86 mm / 3.4 in, days with heavy rain 2.9 days, wet days 10.8 days.
Against: feels like (high) 31 °C / 88 °F, average daily low 23.3 °C / 74 °F, relative humidity 80%.
August · good
In its favour: share of daylight that is sunny 84%, average daily high 26.4 °C / 80 °F, feels like (high) 29.7 °C / 85 °F, precipitation 94 mm / 3.7 in, days with heavy rain 3 days, wet days 9.7 days.
Against: average daily low 22.7 °C / 73 °F, relative humidity 79%.
September · best
In its favour: feels like (high) 25.1 °C / 77 °F, average daily high 23.8 °C / 75 °F, share of daylight that is sunny 79%, precipitation 85 mm / 3.4 in, wet days 8.9 days, days with heavy rain 2.9 days, average daily low 20.2 °C / 68 °F.
Against: relative humidity 77%.
October · good
In its favour: feels like (high) 17.9 °C / 64 °F, average daily high 19.2 °C / 67 °F, share of daylight that is sunny 77%, wet days 8.8 days, precipitation 121 mm / 4.8 in, average daily low 14.9 °C / 59 °F, days with heavy rain 3.5 days, relative humidity 73%.
November · good
In its favour: share of daylight that is sunny 74%, precipitation 89 mm / 3.5 in, wet days 8.2 days, average daily high 13.7 °C / 57 °F, days with heavy rain 2.9 days, average daily low 8.8 °C / 48 °F, relative humidity 70%.
Against: feels like (high) 10.5 °C / 51 °F.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- June–September
Why these months
June · good
In its favour: share of daylight that is sunny 83%, precipitation 76 mm / 3 in, average daily high 24 °C / 75 °F, feels like (high) 26.3 °C / 79 °F, days with heavy rain 2.9 days, average daily low 19.9 °C / 68 °F, wind (daily max) 23 km/h / 15 mph.
Against: wet days 9.7 days.
July · good
In its favour: average daily high 27 °C / 81 °F, share of daylight that is sunny 86%, feels like (high) 31 °C / 88 °F, precipitation 86 mm / 3.4 in, days with heavy rain 2.9 days, average daily low 23.3 °C / 74 °F, wind (daily max) 22 km/h / 14 mph.
Against: wet days 10.8 days.
August · good
In its favour: average daily high 26.4 °C / 80 °F, share of daylight that is sunny 84%, feels like (high) 29.7 °C / 85 °F, precipitation 94 mm / 3.7 in, days with heavy rain 3 days, average daily low 22.7 °C / 73 °F, wind (daily max) 22 km/h / 13 mph.
Against: wet days 9.7 days.
September · good
In its favour: share of daylight that is sunny 79%, average daily high 23.8 °C / 75 °F, precipitation 85 mm / 3.4 in, feels like (high) 25.1 °C / 77 °F, days with heavy rain 2.9 days, average daily low 20.2 °C / 68 °F, wet days 8.9 days, wind (daily max) 25 km/h / 15 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Blue Mountain Resort, 255 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 1.9 °C | 2.7 °C | 6.3 °C | 12.3 °C | 18.9 °C | 26.3 °C | 31 °C | 29.7 °C | 25.1 °C | 17.9 °C | 10.5 °C | 5.6 °C |
| Days with heavy rain | 3.2 days | 3.5 days | 3.5 days | 3 days | 2.8 days | 2.9 days | 2.9 days | 3 days | 2.9 days | 3.5 days | 2.9 days | 3.8 days |
| Time rain usually falls | 1 pm | 6 am | 10 am | 7 pm | 6 am | 4 pm | 4 pm | 5 pm | 4 pm | 5 pm | 9 am | 5 am |
| Sunshine per day | 7.1 h | 7.6 h | 8.9 h | 10.2 h | 11.3 h | 12.2 h | 12.5 h | 11.5 h | 9.8 h | 8.6 h | 7.5 h | 6.4 h |
| Relative humidity | 69% | 69% | 69% | 71% | 78% | 78% | 80% | 79% | 77% | 73% | 70% | 72% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 5.8 °C | 5.8 °C | 8.1 °C | 12.3 °C | 16.8 °C | 21.6 °C | 25.1 °C | 24.3 °C | 23.4 °C | 19.2 °C | 14 °C | 8.5 °C |
| Sea temperature (daily max) 2022–2025 | 5.9 °C | 5.9 °C | 8.3 °C | 12.6 °C | 17.1 °C | 22 °C | 25.5 °C | 24.6 °C | 23.6 °C | 19.4 °C | 14.2 °C | 8.6 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 7.8 µg/m³ | 9 µg/m³ | 8.5 µg/m³ | 9.2 µg/m³ | 10.6 µg/m³ | 14 µg/m³ | 12.3 µg/m³ | 11.7 µg/m³ | 9.2 µg/m³ | 7.3 µg/m³ | 7.1 µg/m³ | 7 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 13.1 µg/m³ | 15.1 µg/m³ | 13.4 µg/m³ | 14.6 µg/m³ | 16.3 µg/m³ | 21.3 µg/m³ | 17.3 µg/m³ | 17.4 µg/m³ | 13.2 µg/m³ | 11 µg/m³ | 11.5 µg/m³ | 11.8 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.