Dublin in August: what to plant
Over the last 5 years, August in Dublin has run 13.3–19.5°C with about 75 mm of rain across the month. Here is what weather like that will carry to harvest.
Everything above is a five-year average. In the game it is this — the weather Dublin is actually having, today.
Grow one in Dublin's weather right now →❄️ No sub-zero nights in August in the last 5 years — frost is not the limiting factor here.
🗓️ This month sits inside the frost-free window. Average last spring frost around Feb 10, first autumn frost around Nov 30 — roughly 294 frost-free days. Sow tender crops after the last frost date and make sure they finish before the first.
☀️ About 10.1 h of sunshine a day this month. Temperatures hold steady through the month.
Sow this month — when would you harvest?
Assuming you sow in mid-August, then adding up the warmth Dublin usually gets, one day at a time — which is why some of these run past the end of the month.
| Crop | Days | Harvest around |
|---|---|---|
| 🏵️ Marigold | 94 | Nov 16 |
| 🌿 Garlic chives | 125 | Dec 17 |
| 🧅 Onion | 217 | Mar 19 |
| 🥕 Parsnip | 195 | Feb 25 |
| 🧅 Leek | 186 | Feb 16 |
| 🍓 Strawberry | 75 | Oct 28 |
| 🥬 Napa cabbage | 92 | Nov 14 |
| 🥬 Cabbage | 150 | Jan 11 |
⏳ Too late this month: Zucchini, Green Beans, Amaranth greens, Potato would still be in the ground when the first frost arrives (around Nov 30). Sow them earlier in the year, or grow them under cover.
🌡️ Cucumber, Tomato, Chili Pepper, Pumpkin, Edamame, Yardlong bean, Bitter melon, Luffa, Winter melon, Aubergine, Okra never accumulate enough heat outdoors in Dublin — not in any month. Locally these need a greenhouse or a warm windowsill.
Best crops to sow now
They are all ideal for this month — the only real difference is how long each one takes, so pick whatever you want to eat.
- 🥒 Zucchini about 102 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🥢 Green Beans about 94 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🌿 Amaranth greens about 87 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🏵️ Marigold about 64 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🥔 Potato about 96 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🌿 Garlic chives about 75 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🧅 Onion about 93 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🥕 Parsnip about 104 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🧅 Leek about 93 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🍓 Strawberry about 61 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🥬 Napa cabbage about 69 days to harvest Recent mean 16.4°C — right in the sweet spot
- 🥬 Cabbage about 85 days to harvest Recent mean 16.4°C — right in the sweet spot
Leave these for another month
- 🌶️ Okra — Recent mean 16.4°C is too cold (ideal 20–33°C)
- 🍆 Aubergine — Recent mean 16.4°C is too cold (ideal 18–32°C)
- 🍈 Winter melon — Recent mean 16.4°C is too cold (ideal 18–32°C)
Other months in Dublin
📍 Somewhere else? Look up your own city →
Temperature and rainfall come from Open-Meteo's historical observations for Dublin, averaged day by day over the last 5 years. Whether a crop finishes in time is worked out from its own starting temperature and heat requirement — those numbers are listed on each crop page if you want to check them.