When to plant watermelons in Murmansk: 13 July – 5 August

In Murmansk, watermelon: sow for seedlings from 25 May to 8 July; plant into a greenhouse from 22 June to 5 August; plant out into open ground from 13 July to 5 August.

Watermelon in Murmansk: soil, season and weather

In Murmansk the soil, not frost, sets the date: the last frost is over around 24 May, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 13 July, 50 days later. 82 days separate planting out (13 July) from the first autumn frost (3 October); the card's 59 days to the first harvest leave 23 for picking, so a start 3 weeks late would still fit.

Last spring frost	24 May
Top 7 cm of soil at 18 °C	13 July, 50 days after the last frost
Into an unheated greenhouse	22 June – 5 August; June outside: 5.6 °C at night, 14.1 °C by day; card 18–35 °C
First autumn frost	3 October, 82 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	10 September – 3 October
Days left for picking	23
Daylight	24:00 on 15 June, 24:00 on 13 July
Watering outdoors when fruiting (card)	every 5 days; the driest month, October, has 13 rainy days

The same dates in Murmansk hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Murmansk: care after planting

Planted on 13 July: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

13 July — feed: balanced (NPK)

Pests and diseases of watermelon to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Murmansk during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 18.7 °C. Months that stay below 18 °C even by day on average: August (16.2 °C), September (11.1 °C) and October (3.3 °C). Nights average below 18 °C in every month of the season, from -0.7 °C to 9.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
July	18.7	9.8	57	12	24:00
August	16.2	8.8	79	15	17:54
September	11.1	5.1	74	12	13:25
October	3.3	-0.7	51	13	9:19

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon earlier than Murmansk; the closest date is in Arkhangelsk, 1 day earlier.

City	Distance	Date	Difference
Arkhangelsk	589 km	12 July – 10 August	1 day earlier
Petrozavodsk	802 km	1 July – 8 July	12 days earlier
Saint Petersburg	1,013 km	17 June – 11 July	26 days earlier
Helsinki	1,051 km	17 June – 11 July	26 days earlier
Cherepovets	1,118 km	22 June – 8 July	21 days earlier
Vologda	1,131 km	22 June – 1 July	21 days earlier

Where to buy watermelon plants and seeds near Murmansk

Buy plants ready to set out from 13 July to 5 August (from 22 June to 5 August for an unheated greenhouse); seed for raising your own is sown from 25 May to 8 July. Within 15 km of Murmansk OpenStreetMap lists 1 market and 1 farm shop (collected 27 October 2026).

Ленинский — market
1 km
Лавна — farm shop
10 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions