7 Summer-Themed Business Ideas You Can Start Right Away Credit: Bare feet image via Shutterstock

Nothing fuels that burning desire to become your own boss like a warm summer day spent inside a dark cubicle. But there's still time to break out of the 9-to-5 routine before the weather heats up.

Here are seven ideas for businesses — inspired by summer — that you can have up and running in no time:

Barbecue catering

Summer barbecues are an American tradition, but no party host wants to spend hours slaving over a hot grill. A barbecue catering service is just the thing to solve that problem.  

Starting your own barbecue catering service will require, first and foremost, a dedication to the art of grilling. Whether you're a Cajun-chicken aficionado or an authority on ribs, having a few tried-and-true recipes up your sleeve will help you cement yourself as a fixture on the summer barbecue circuit. [Visit Our Business Ideas section for hundreds of business ideas all in one place.]

But apart from being handy with a set of tongs, you'll also have to drum up a bit of startup capital to get your business off the ground. Grills large enough to feed the hungry hordes at a company picnic or family reunion can go for more than $3,000.

You'll also need to invest some time in branding and marketing your new business.

Pool technician

If you want to be just another guy or gal with a pole and a skimmer, go ahead and start a "pool-cleaning" business. But if you really want to stand out in the competitive world of pool maintenance, brand yourself as a "pool technician."

Take a page from the customer service manual of Willan Johnson, the CEO of pool management company Vivo Pools, and position yourself as a customer-focused, trend-savvy and technically knowledgeable authority in your field.

As Johnson told CNBC, "Most pool guys are like housecleaners. They should be part house cleaner, part mechanic."

Water-sport instructor

In recent years, beaches everywhere — from the coast of Connecticut to the shores of the Great Lakes — have been inundated by a new breed of summertime tourist: the water-sport day tripper. For beach-town locals, these rookie athletes are typically viewed as a summertime nuisance, but for aspiring entrepreneurs, these paddle-brandishing out-of-towners represent a business opportunity.

If you're a surfer, kayaker, paddle-boarder, parasailer or other water-sport enthusiast, you have all the expertise you need to start making money as an aquatic athletic instructor. Of course, if you also happen to have a lifeguard certification, this summer side gig might have even more potential.

Before hitting the beach in search of clueless-looking clients, consider what people are looking for in a water-sport instructor. You'll need to be personable as well as knowledgeable about the sport at hand, systematic in your teaching methods and, perhaps most importantly, extremely patient.

Vacation liaison  

Summertime is high season for family vacations, and as such, many houses need to be looked after during the summer months. While many vacationers think leaving friends and family members in charge of their home when they head out on holiday is good enough, there's something to be said for having a professional do the job instead.

When approaching prospective clients about your vacation-liaison service, make it clear that you're more than just a housesitter. In addition to keeping burglars at bay, your services should include all the things homeowners want done in their absence but feel bad asking others to do for them.

These tasks include taking care of pets (even the gross stuff, like cleaning out the litter box); tending the lawn and flowerbeds; cleaning out the fridge when it starts to stink; checking the mailbox; and everything in between.

Beachside babysitting

Did you ever notice how it's the people without kids who seem to be having the best time at the beach? There's a reason for that. Sometimes, parents on summer vacation just need a break.

Beachside babysitting, adventure-time child care, foreign language immersion nanny — these are all viable options for making your services stand out from the rest. Whether you plan to market your caregiving business to working parents whose kids are out of school for the summer or to stay-at-home parents looking for a little downtime in the heat of the day, you'll need to prove two things before you score any clients.

First, parents will want to know that you have what it takes to care for kids. CPR certification, lifeguard certification or teaching and tutoring experience will all look good on your résumé. Second, parents want to know that their little ones aren't just sitting around the house all day, so use whatever creative marketing strategy you've come up with to set their minds at ease.

Too-cool-for-school tutoring

Much like summertime babysitting, the summer months are a competitive time for tutors. Parents worried that their children's brains will turn to mush without routine instruction are eager to sign kids up to do the one thing they don't want to do over the summer — learn something.

And this childhood nightmare presents a wonderful business opportunity for you, the too-cool-for-school tutor. To execute this summer gig successfully, you'll need to master two skills.

First, you'll have to actually know something about a particular subject area. Good at math? Use that. Closet poet? Now is the time to share your way with words with today's youth. Once you've established what subjects you'll be promoting, it's time to focus on what's arguably the more important aspect of this job: being cool.

Plan fun activities for your prospective clients. Don't just meet them at the public library. Are you a Spanish tutor? Why not take your students to the local taco joint and spend some time translating the menu? If you're a science tutor, you've got it made: Hold your lessons in the great outdoors. Just remember: Summer school is cooler when it doesn't look or feel like regular school

Flea-market virtuoso

Selling old clothes and records at your local flea market might earn you a few bucks this summer, but actually organizing your own flea market is the better bet for those looking to make real cash. Flea-market organizing is an oft-overlooked profession, but it really exists, and with a little research, you could make it your own in no time.

Flea-market organizers (or "virtuosos," for those with panache) are the people who rent the space needed to hold a flea market. They obtain the necessary permits for selling goods and food products, solicit vendors, and plan the details for these events.

While opening a flea-market business requires a bit of startup capital — some sites estimate that total costs can be as high as $10,000 — it's the kind of summer business that has a good chance of surviving past Labor Day, if you play your cards right.